Features: Special high polymer composites. Having characteristic tics of non-adhesive, high smoothness and high wear-resistance. Decrease the friction between the mouse and the mousepad caused by the movement, reach the effect of maintenance. It will greatly increase the smoothness between the mouse and the mousepad after using, allow you to experience the feeling of freely flying. The work of mouse skates is so deliberate and carful especially filing up the edge of chamfering that it can avoid accident scuffing for mouse skates effectively. Once it is used out after sticking on the mouse for a long for time, it still can be detached completely without defective gum. Specifications: Material: PTFE Size: approx. 5x5cm/1.97x1.97in Colour: Black Suitable for: G402 Package Includes: 1 set x mouse skate for G402 mouse note: Before using mouse skates, remove the original ones. Don'for t increase any distance between the mouse and the mousepad, so as to prevent the sensitivity of mouse being affected. Keep your mousepad clean during daily use, avoid the mousepad and mouse skates being scratched due to the dust. No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!