Features: Good Materials: These mouse feet PTFE materials, which is wear-resistant and reduces frictions, significantly extending the life of mouse. Clear hand feel: balanced start stop, good smoothness, and excellent smoothness. Strong wear resistance: The control has clear hand feel and can slightly feel the texture of mouse pad. It starts faster than it stops. The smoothness is not very good, it starts quickly. Provide a sense of control through sliding and stopping. Curved surfaces design: The surfaces is treated with arcs edges, with curved surfaces. The excellent curved edges will not scratch the mouse pad. High precisions: enhanceds your gaming experience, ensuring smoother mouse sliding and higher performances. Specifications: Materials: PTFE Suitable models: for DeathAdder Package Includes: 1Pack Mouse Feet note: Please allow 0-1cm error due to manual measurement. makes sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you.