High-Density PTFE: Made from premium grade hardened PTFE, these skates are more durable than typical Virgin PTFE, extending their lifespan significantly on glass mousepads. Smooth Glide: Rounded edges and a polished surface gives these skates a quiet, fast, and effortless glide. Designed for Glass: Specifically engineered for glass mousepads. Aero Glides feature our uniquely engineered blend of PTFE. Universal Fit: These 6mm dots fit any gaming mouse. They work on both glass and other mousepad surfaces. Easy to Install: Each pack includes two wipes to remove old adhesive. The skates come in protective packaging to keep them in excellent condition. To install: Remove old skates and adhesive, clean area with provided wipe, set new skates in desired place, and press down for 10 seconds to adhere.