Titanium U9 with 9x Durability – X-Raypad Lab Verification. Which is optimized for glass pads, while also compatible with cloth mousepads. Utilizing ultra-high molecular weight polyethylene, multi-layer structure. Which no wobble, provide consistent aiming. Confidence in every movement. Ultimate durability:Adopting the highest wear-resistant grade ultra-high molecular weight polyethylene (UHMWPE) material. Stable and smooth:Provide consistent smoothness, more responsive movement, and more precise control. Silent design:Specially added noise reduction layer effectively reduces sliding noise, allowing you to focus more on the game itself without being disturbed by noise. Full adaptability:Specially optimized for glass pads and compatible with cloth mouse pads, it can perform stably in various scenarios. Diameter: 6.5mm(1/4″) or 8mm(0.31″) Package Included: 40 dots skates Two alcohol Pads Two adhesive remover wipes