Our Sapphire mouse feet have an ultra-polished surface with a mirror finish, providing a smoother glide, low static and higher dynamic friction. The aggressive curvature gives more feedback on textured pads. The rounded edges ensure performance during off-axis movements. Easily sliding over any particles on the mousepad, so less disturbances in-game. These mouse feet are incredibly durable, with a 9 Mohs hardness that makes them nearly impossible to scratch, except with a diamond. Made from whole single crystal boules, they are cut and shaped with diamond tools to keep the sapphire crystal structure intact. This skates last for a very long time. They are 7mm in length, 5mm in width and 1.2mm thick. Not recommended for glass pads.