New Controllable Surface - Revolutionary micro-surfaced texture for speed, smooth glide, and exceptional stopping power. Perfect for games at any pace. Super durable - super strong tempered glass will not wear fast like conventional PTFE feet, you can almost use it permanently. Round edge - Perfectly polished super smooth round edge will provide you smoothest glide ever. Do not recommend use with glass mouse pads. Superglide Feet Version Two. New Controllable Speed Textured Surface, Revolutionary micro-surfaced texture for speed, smooth glide, and exceptional stopping power. Perfect for games at any pace. Gives you a big advantage of micro aiming and tracking.