Tempered Glass Anti-scratch for the Lenovo Miix 310 (9H Hardness 0.3mm);99.9% transparency; extremely thin glass - 0.3MM. surface Hardness - 9H. 2.5D Curved edge prevents the glass from chipping;Protects screen without affecting the touch screen's quality, sensitivity, or screen color;Protects screen against water, dust, dirt, scratches, fingerprints, cracks, dents, smudge marks, and other common hazards;Easy to install, will never create any bubbles if installed correctly, leaves NO marking when removed