Smartphone & Tablet Cases & Accessories, 1741 page

25Pcs For Xiaomi Poco C75 4G/Redmi A3 Pro 4G/14R 5G/14C 4G Tempered Glass Screen Protector High Definition

100Pcs For Xiaomi Poco C75 4G/Redmi A3 Pro 4G/14C 4G/14R 5GScreen Protector Anti-Scratch Tempered Glass Film

50Pcs For Xiaomi Poco C75 4G/Redmi A3 Pro 4G/14R 5G/14C 4G Screen Protector Ultra Clear Full Glue Tempered Glass Film

50Pcs For Huawei Nova 13 Screen Protector Ultra Clear Full Glue Tempered Glass Film

100Pcs For Huawei Nova 13 Screen Protector Anti-Scratch Tempered Glass Film

25Pcs For Huawei Nova 13 Tempered Glass Screen Protector High Definition

25Pcs For Motorola Moto G75 5G Tempered Glass Screen Protector High Definition

100Pcs For Motorola Moto G75 5G Screen Protector Anti-Scratch Tempered Glass Film

50Pcs For Motorola Moto G75 5G Screen Protector Ultra Clear Full Glue Tempered Glass Film

50Pcs For Samsung Galaxy S25 Edge/S25+/S24+ Screen Protector Ultra Clear Full Glue Tempered Glass Film

100Pcs For Samsung Galaxy S25 Edge/S25+/S24+ Screen Protector Anti-Scratch Tempered Glass Film

25Pcs For Samsung Galaxy S25 Edge/S25+/S24+ Tempered Glass Screen Protector High Definition

25Pcs For Samsung Galaxy S25/S24 Tempered Glass Screen Protector High Definition

100Pcs For Samsung Galaxy S25/S24 Screen Protector Anti-Scratch Tempered Glass Film

50Pcs For Samsung Galaxy S25/S24 Screen Protector Ultra Clear Full Glue Tempered Glass Film

50Pcs For Samsung Galaxy S25 Ultra Screen Protector Ultra Clear Full Glue Tempered Glass Film

100Pcs For Samsung Galaxy S25 Ultra Screen Protector Anti-Scratch Tempered Glass Film

25Pcs For Samsung Galaxy S25 Ultra Tempered Glass Screen Protector High Definition

25Pcs For Oppo Find X8 5G Tempered Glass Screen Protector High Definition

100Pcs For Oppo Find X8 5G Screen Protector Anti-Scratch Tempered Glass Film

50Pcs For Oppo Find X8 5G Screen Protector Ultra Clear Full Glue Tempered Glass Film

50Pcs For Honor X5b/X5b+ Screen Protector Ultra Clear Full Glue Tempered Glass Film

100Pcs For Honor X5b/X5b+ Screen Protector Anti-Scratch Tempered Glass Film

25Pcs For Honor X5b/X5b+ Tempered Glass Screen Protector High Definition

25Pcs For Xiaomi Redmi Note 14 5G/Note 14 4G (163.25x76.55x8.16mm) Tempered Glass Screen Protector High Definition

100Pcs For Xiaomi Redmi Note 14 5G/Note 14 4G (163.25x76.55x8.16mm) Screen Protector Anti-Scratch Tempered Glass Film

50Pcs For Xiaomi Redmi Note 14 5G/Note 14 4G (163.25x76.55x8.16mm) Screen Protector Ultra Clear Full Glue Tempered Glass Film

NORTHJO 1 Set For Samsung Galaxy S25 Tempered Glass Camera Lens Film CD Veins Metal Ring Lens Guard

NORTHJO 1 Set For Samsung Galaxy S25+ Tempered Glass Camera Lens Film CD Veins Metal Ring Lens Guard

NORTHJO 1 Set For Samsung Galaxy S25 Ultra Tempered Glass Camera Lens Film CD Veins Metal Ring Lens Guard

NORTHJO A++ For Xiaomi 15 Privacy Screen Protector Support Fingerprint Unlock High Aluminium-Silicon Glass 0.3mm Film

For Xiaomi 15 ENKAY Hat-Prince 2Pcs Camera Lens Protector Integrated Tempered Glass Lens Film

For Xiaomi Redmi 14C 4G/Redmi 14R 5G/Poco C75 4G Camera Lens Protector 2Pcs ENKAY Hat-Prince Integrated Tempered Glass Lens Film

For Xiaomi Redmi 14C 4G/Redmi 14R 5G/Poco C75 4G ENKAY Hat-Prince Camera Lens Protector Integrated Tempered Glass Lens Film

For Xiaomi 15 ENKAY Hat-Prince Camera Lens Protector Integrated Tempered Glass Lens Film

For Samsung Galaxy S25 Ultra Camera Lens Protector Set Electroplating Metal+Tempered Glass Individual Lens Film

For Samsung Galaxy S25 Ultra Camera Lens Protector Set Electroplating Metal+Tempered Glass Individual Lens Film

For Samsung Galaxy S25 Camera Lens Protector Set Electroplating Metal+Tempered Glass Individual Lens Film

For Samsung Galaxy S25 Camera Lens Protector Set Electroplating Metal+Tempered Glass Individual Lens Film

For Xiaomi 15 Tempered Glass Screen Protector Full Glue Silk Printing Film

For Xiaomi 15 Tempered Glass Anti Peep Film Full Coverage Privacy Protection Screen Protector

MOFI JK Series-1 for iPhone 16e Screen Protector Anti-Explosion 9H Hardness Full Cover Screen Film

PINWUYO JK Series-2 for iPhone 16e High Aluminium-Silicon Glass Film 9H Full Screen Protector

For Xiaomi 15 Ultra/15 Pro Anti-Spy Screen Protector High Aluminum-Silicon Glass Film

RURIHAI For Oppo Find X8 Pro 5G High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For Infinix Hot 50 Pro 4G High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For Xiaomi Redmi Note 14 Pro 5G/Poco X7 5G High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For Xiaomi Redmi Note 14 Pro+ 5G High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For Honor Magic7 Pro 5G High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For Honor X60 Pro 5G High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For Xiaomi 15 Pro High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For OnePlus 13 High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For Huawei Nova 13 Pro 5G High Aluminium-Silicon Glass Phone Screen Protector 3D Curved Side Glue Film

RURIHAI For Realme P2 Pro 5G Camera Lens Protector HD Clear Anti-Scratch Lens Film

RURIHAI For Xiaomi 15 Screen Protector Secondary Hardening High Aluminium-Silicon Glass Film

RURIHAI 10Pcs For Xiaomi 15 High Aluminium-Silicon Glass Film 0.26mm 2.5D Screen Protector

RURIHAI 10Pcs For Samsung Galaxy A36 5G High Aluminium-Silicon Glass Film 0.26mm 2.5D Screen Protector

RURIHAI For Samsung Galaxy A36 5G Screen Protector Secondary Hardening High Aluminium-Silicon Glass Film

RURIHAI For Honor Magic7 5G Lens Protector AR Ultra Clear High Aluminium-Silicon Glass Film

RURIHAI For Honor Magic7 Pro 5G Lens Protector AR Ultra Clear High Aluminium-Silicon Glass Film

RURIHAI For Xiaomi Pad 7/7 Pro Lens Protector AR Ultra Clear High Aluminium-Silicon Glass Film

IMAK For Infinix Hot 50 Pro+ 4G Tempered Glass Screen Protector 3D Curved Edge

IMAK For Xiaomi 15 Pro Tempered Glass Screen Protector 3D Curved Edge

IMAK For Oppo Find X8 Pro 5G Tempered Glass Screen Protector 3D Curved Edge

IMAK For Huawei Nova 13 Pro 5G Tempered Glass Screen Protector 3D Curved Edge

IMAK For Honor Magic7 Pro 5G Tempered Glass Screen Protector 3D Curved Edge

IMAK For Infinix Hot 50 Pro+ 4G Anti-Spy Full Cover Screen Protector Tempered Glass Film

IMAK For Xiaomi 15 Pro Anti-Spy Full Cover Screen Protector Tempered Glass Film

IMAK For Oppo Find X8 Pro 5G Anti-Spy Full Cover Screen Protector Tempered Glass Film

IMAK For Huawei Nova 13 Pro 5G Anti-Spy Full Cover Screen Protector Tempered Glass Film

IMAK For Oppo Find X8 Pro 5G 3D Curved Tempered Glass Full Screen Protector (No Edge Version)

IMAK For Huawei Nova 13 Pro 5G 3D Curved Tempered Glass Full Screen Protector (No Edge Version)

IMAK For Oppo Find X8 Pro 5G Anti-Spy Tempered Glass Screen Protector (No Edge Version)

IMAK For Huawei Nova 13 Pro 5G Anti-Spy Tempered Glass Screen Protector (No Edge Version)

IMAK H Series For HMD Fusion 5G Tempered Glass Screen Protector Shatter-Proof Protection

IMAK H Series For Oppo Find X8 5G Tempered Glass Screen Protector Shatter-Proof Protection

IMAK H Series For Honor Play9T 5G Tempered Glass Screen Protector Shatter-Proof Protection

IMAK H Series For Honor Magic7 5G Tempered Glass Screen Protector Shatter-Proof Protection

IMAK H Series For Samsung Galaxy A36 5G Tempered Glass Screen Protector Shatter-Proof Protection

IMAK H Series For Xiaomi 15/15 Custom Edition Tempered Glass Screen Protector Shatter-Proof Protection

IMAK H Series For Vivo X200 Pro Mini 5G Tempered Glass Screen Protector Shatter-Proof Protection

IMAK Pro+ Series For HMD Fusion 5G Tempered Glass Full Screen Protector Sensitive Touch Film

IMAK Pro+ Series For Oppo Find X8 5G Tempered Glass Full Screen Protector Sensitive Touch Film

IMAK Pro+ Series For Honor Play9T 5G Tempered Glass Full Screen Protector Sensitive Touch Film

IMAK Pro+ Series For Honor Magic7 5G Tempered Glass Full Screen Protector Sensitive Touch Film

IMAK Pro+ Series For Xiaomi 15/15 Custom Edition Tempered Glass Full Screen Protector Sensitive Touch Film

PINWUYO JK Series-2 for Vivo X200 Pro Mini 5G High Aluminium-Silicon Glass Film 9H Full Screen Protector

PINWUYO JK Series-2 for Honor X7c 4G/200 Smart 5G High Aluminium-Silicon Glass Film 9H Full Screen Protector

PINWUYO JK Series-2 for Honor X5b Plus/X5b High Aluminium-Silicon Glass Film 9H Full Screen Protector

MOFI JK Series-1 Screen Protector for Xiaomi Poco C75 4G/Redmi 14R 5G/14C 4G Anti-Explosion 9H Hardness Full Cover Screen Film

MOFI JK Series-1 Screen Protector for Asus Zenfone 12 Ultra 5G/ROG Phone 9 Pro 5G/Phone 9 5G Anti-Explosion 9H Hardness Full Cover Screen Film

MOFI JK Series-1 for Honor X7c 4G/200 Smart 5G Screen Protector Anti-Explosion 9H Hardness Full Cover Screen Film

MOFI JK Series-1 for Honor X5b Plus/X5b Screen Protector Anti-Explosion 9H Hardness Full Cover Screen Film

MOFI JK Series-1 for Vivo X200 Pro Mini 5G Screen Protector Anti-Explosion 9H Hardness Full Cover Screen Film

PINWUYO JK Series-2 Full Screen Protector for Asus Zenfone 12 Ultra 5G/ROG Phone 9 Pro 5G/Phone 9 5G High Aluminium-Silicon Glass 9H Film

For Samsung Galaxy Z Fold6 5G Back Protector Silk Printing Full Glue Complete Cover Tempered Glass Film

Camera Lens Protector For iPhone 15/15 Plus/14/14 Plus Tempered Glass Lens Film Precise Positioning Easy Installation

For iPhone 16/16 Plus Camera Lens Protector Tempered Glass Lens Film Precise Positioning Easy Installation

Camera Lens Protector For iPhone 16 Pro/16 Pro Max/15 Pro/15 Pro Max/14 Pro/14 Pro Max Tempered Glass Lens Film Precise Positioning Easy Installation

For Google Pixel 8a Screen Protector High Aluminum-Silicon Glass Film 0.33mm 2.5D

10Pcs/Pack For Google Pixel 8a Screen Protector High Transparency Protective Film

For Google Pixel 9 Pro/Pixel 9 Screen Protector High Aluminum-Silicon Glass Film 0.33mm 2.5D

10Pcs/Pack For Google Pixel 9 Pro/Pixel 9 Screen Protector High Transparency Protective Film

For Motorola Moto G75 5G Screen Protector High Aluminum-Silicon Glass Film 0.33mm 2.5D

10Pcs/Pack For Motorola Moto G75 5G Screen Protector High Transparency Protective Film

For Realme Note 60 Screen Protector High Aluminum-Silicon Glass Film 0.33mm 2.5D

10Pcs/Pack For Realme Note 60 Screen Protector High Transparency Protective Film

For Honor X5b Screen Protector High Aluminum-Silicon Glass Film 0.33mm 2.5D

10Pcs/Pack For Honor X5b Screen Protector High Transparency Protective Film

For Honor X5b High Aluminum-Silicon Glass Screen Protector 2.5D Silk Printing

10Pcs For Honor X5b Screen Protector Silk Printing Edge Full Glue Complete Covering

For Honor X5b Plus Screen Protector High Aluminum-Silicon Glass Film 0.33mm 2.5D

10Pcs/Pack For Honor X5b Plus Screen Protector High Transparency Protective Film

For Honor X5b Plus High Aluminum-Silicon Glass Screen Protector 2.5D Silk Printing

10Pcs For Honor X5b Plus Screen Protector Silk Printing Edge Full Glue Complete Covering

For Honor X5b Plus/X5b Screen Protector 9D Side Glue Full Covering Tempered Glass Film

For Xiaomi 15 Screen Protector 9D Side Glue Full Covering Tempered Glass Film

For Xiaomi Redmi Note 14 4G (163.25mm) Screen Protector 9D Side Glue Full Covering Tempered Glass Film

For Samsung Galaxy A36 5G Screen Protector 9D Side Glue Full Covering Tempered Glass Film

For Xiaomi 15 Pro Tempered Glass Screen Protector Full Glue Silk Printing Film

For Oppo Find X8 Pro 5G Screen Protector Side Glue Silk Printing Tempered Glass Film Support Fingerprint Unlock

For OnePlus 13 Screen Protector Side Glue Silk Printing Tempered Glass Film Support Fingerprint Unlock

For ZTE Nubia Red Magic 7 Pro Screen Protector Side Glue Silk Printing Tempered Glass Film Support Fingerprint Unlock

For Xiaomi 15 Pro Screen Protector Side Glue Silk Printing Tempered Glass Film Support Fingerprint Unlock

For Samsung Galaxy S25+ Camera Lens Protector Set Electroplating Metal+Tempered Glass Individual Lens Film

For Samsung Galaxy S25+ Camera Lens Protector Set Electroplating Metal+Tempered Glass Individual Lens Film

MOFI JK Series-1 for Huawei Nova 13 5G Screen Protector Anti-Explosion 9H Hardness Full Cover Screen Film

For Huawei Nova 13 Pro 5G Tempered Glass Camera Lens Protector Ultra Clear Anti-Scratch Lens Film

For Oppo Find X8 Pro 5G Tempered Glass Camera Lens Protector Ultra Clear Anti-Scratch Lens Film

For Xiaomi Pad 7/Pad 7 Pro Tempered Glass Lens Protector Black Silk Printing Camera Lens Film

For Xiaomi 15 Tempered Glass Lens Protector Silk Printing Camera Lens Film

For Xiaomi Redmi Note 14 Pro+ 5G Tempered Glass Lens Protector Silk Printing Camera Lens Film

For Xiaomi Redmi Note 14 Pro 5G/Poco X7 5G Tempered Glass Lens Protector Silk Printing Camera Lens Film

For Xiaomi 15 Pro Tempered Glass Lens Protector Silk Printing Camera Lens Film

For Xiaomi 15 Tempered Glass Camera Lens Protector Ultra Clear Anti-Scratch Lens Film

For Xiaomi Redmi Note 14 Pro 5G/Poco X7 5G Tempered Glass Camera Lens Protector Ultra Clear Anti-Scratch Lens Film

For Realme P2 Pro 5G Tempered Glass Camera Lens Protector Ultra Clear Anti-Scratch Lens Film

For Honor Magic7 5G Tempered Glass Lens Protector Black Silk Printing Camera Lens Film

PINWUYO JK Series-2 for Huawei Nova 13 5G High Aluminium-Silicon Glass Film 9H Full Screen Protector

RURIHAI For Xiaomi Pad 7 Pro/Pad 7 Camera Lens Protector High Aluminium Silicon Glass Silk Printing Lens Film

PINWUYO JK 3D Tempered Glass Film Series-2 For Honor Magic7 5G Screen Protector Clear Film (Fingerprint Unlock)

PINWUYO JK 3D Tempered Glass Film Series-2 For Huawei Nova 13 5G Screen Protector Clear Film (Fingerprint Unlock)

PINWUYO For OnePlus 13 Screen Protector 3D Hot Bending Tempered Glass Film

MOFI JK 3D Tempered Glass Film-1 for Honor Magic7 5G (Unlocked) Full Screen Protector Anti-Explosion

MOFI For OnePlus 13 3D Hot Bending Screen Protector Full Glue Tempered Glass Film

MOCOLO For Xiaomi 15 Screen Protector Anti-Shatter Silk Printing Tempered Glass Film

MOCOLO For Honor Magic7 5G Screen Protector Anti-Shatter Silk Printing Tempered Glass Film

For Xiaomi 15 Pro Tempered Glass Full Glue Full Screen Protector Support Fingerprint Unlock

For OnePlus 13 Tempered Glass Full Glue Full Screen Protector Support Fingerprint Unlock

For ZTE Nubia Red Magic 7 Pro Tempered Glass Full Glue Full Screen Protector Support Fingerprint Unlock

For Samsung Galaxy A26 5G Screen Protector 0.3mm Ultra-Clear Tempered Glass Film

5Pcs For Samsung Galaxy A26 5G Screen Protector 0.3mm 2.5D Tempered Glass Clear Film

AMORUS For Samsung Galaxy A26 5G Screen Protector 2.5D Arc Edge 9H High Aluminum-Silicon Glass Film

For Samsung Galaxy A36 5G/A56 5G Screen Protector 0.3mm Ultra-Clear Tempered Glass Film

5Pcs For Samsung Galaxy A36 5G/A56 5G Screen Protector 0.3mm 2.5D Tempered Glass Clear Film

AMORUS For Samsung Galaxy A36 5G/A56 5G Screen Protector 2.5D Arc Edge 9H High Aluminum-Silicon Glass Film

ENKAY HAT PRINCE 1Set For Oppo Reno12 Pro 5G (Global) Camera Lens Protector Metal Ring Lens Film

AMORUS For Xiaomi 15 Screen Protector Anti-Shatter Tempered Glass Film

AMORUS 2Pcs For Xiaomi 15 Screen Protector Shatterproof Silk Printing Tempered Glass Film

AMORUS For Honor Magic7 5G Screen Protector Anti-Shatter Tempered Glass Film

AMORUS 2Pcs For Honor Magic7 5G Screen Protector Shatterproof Silk Printing Tempered Glass Film

AMORUS For Xiaomi 15 Pro Screen Protector 3D Curved Tempered Glass Film

MOCOLO For Xiaomi 15 Pro Screen Protector 3D Curved Tempered Glass Film

D Pro For Samsung Galaxy A26 5G Silk Printing Tempered Glass Screen Protector 9H Hardness

D Pro For Samsung Galaxy A36 5G/A56 5G Silk Printing Tempered Glass Screen Protector 9H Hardness

For OnePlus 13 Tempered Glass ENKAY HAT PRINCE 3D Curved Clear Screen Protector Ultrasonic Fingerprint Unlock

For Xiaomi 15 Pro Tempered Glass ENKAY HAT PRINCE 3D Curved Clear Screen Protector Ultrasonic Fingerprint Unlock

For Huawei Nova 13 5G 2Pcs Screen Protector ENKAY HAT PRINCE 9H Silk Printing 0.26mm Tempered Glass

For Huawei Nova 13 5G ENKAY HAT PRINCE Screen Protector 9H Hardness High Aluminum-Silicon Glass Film

For Huawei Nova 13 5G ENKAY HAT PRINCE Screen Protector 9H Hardness High Aluminum-Silicon Glass Film

For Xiaomi Redmi A4 5G/A3 Pro 4G Screen Protector Silk Printing Full Glue Tempered Glass Screen Film

For Xiaomi Redmi A4 5G/A3 Pro 4G Anti-Spy Tempered Glass Screen Protector Full Covering Scratch-Resistant Film

For Honor Magic7 5G Anti-Spy Tempered Glass Screen Protector Full Covering Scratch-Resistant Film

For Samsung Galaxy A26 5G Anti-Spy Tempered Glass Screen Protector Full Covering Scratch-Resistant Film

For Samsung Galaxy A36 5G/A56 5G Anti-Spy Tempered Glass Screen Protector Full Covering Scratch-Resistant Film

For Samsung Galaxy A36 5G/A56 5G Anti-Spy Tempered Glass Screen Protector Full Covering Scratch-Resistant Film

For Xiaomi Redmi A4 5G/A3 Pro 4G Anti-Peep Full Covering Screen Protector Silk Printing Tempered Glass Film

For Samsung Galaxy A06 4G Camera Lens Protector High Clarity Tempered Glass Lens Film

For Xiaomi Redmi 13 5G/13 4G Camera Lens Protector High Clarity Tempered Glass Lens Film

For Samsung Galaxy S24 Camera Lens Protector High Clarity Tempered Glass Lens Film

For Motorola Moto G85 5G Camera Lens Protector High Clarity Tempered Glass Lens Film

For Motorola Edge 50 Ultra 5G/X50 Ultra 5G Camera Lens Protector High Clarity Tempered Glass Lens Film

For Samsung Galaxy A26 5G Screen Protector Silk Printing Full Glue Tempered Glass Screen Film

For Samsung Galaxy A26 5G Anti-Peep Full Covering Screen Protector Silk Printing Tempered Glass Film

For Samsung Galaxy A36 5G/A56 5G Anti-Peep Full Covering Screen Protector Silk Printing Tempered Glass Film

For Samsung Galaxy A36 5G/A56 5G Screen Protector Silk Printing Full Glue Tempered Glass Screen Film

For Samsung Galaxy A36 5G/A56 5G Screen Protector Silk Printing Full Glue Tempered Glass Screen Film

PINWUYO For Oppo Reno12 Pro 5G (Global)/Reno12 5G (Global) Screen Protector 3D Hot Bending Tempered Glass Film

PINWUYO For Realme 13 Pro 5G (Global)/13 Pro+ 5G (Global) Screen Protector 3D Hot Bending Tempered Glass Film

For Samsung Galaxy A36 5G/A56 5G Screen Protector High Aluminum-Silicon Glass Film 0.33mm 2.5D

10Pcs/Pack For Samsung Galaxy A36 5G/A56 5G Screen Protector High Transparency Protective Film

10Pcs For Samsung Galaxy A36 5G/A56 5G Screen Protector Silk Printing Edge Full Glue Complete Covering

For Realme GT 7 Pro 5G Tempered Glass Lens Protector Black Silk Printing Camera Lens Film

For Samsung Galaxy S25 Ultra Screen Protector 0.3mm Ultra-Clear Tempered Glass Film

For Samsung Galaxy S25+ Screen Protector 0.3mm Ultra-Clear Tempered Glass Film

For Samsung Galaxy S25 Screen Protector 0.3mm Ultra-Clear Tempered Glass Film

For Samsung Galaxy A26 5G Screen Protector High Aluminum-Silicon Glass Film 0.33mm 2.5D

10Pcs/Pack For Samsung Galaxy A26 5G Screen Protector High Transparency Protective Film

D Pro For Samsung Galaxy A16 5G/4G Silk Printing Tempered Glass Screen Protector 9H Hardness

D Pro For Samsung Galaxy A36 5G/A56 5G Silk Printing Tempered Glass Screen Protector 9H Hardness