【Material Upgrade】- In order to extend the life of the grinding wheel, we have conducted several experiments and found that replacing the resin with high-quality aluminum oxide makes the grinding wheel harder, more wear-resistant and better performance! 【Disc Dimensions】: Diameter 115mm, Thickness 15mm. Aperture: 22mm (0.86"), Peak speed H: 11000 (rpm), Peak speed 80, Sanding grain size with black silicon carbide 46# 【Application range】: This cleaning disc is suitable for interface sanding, oil pipe burr removal, ceramic floor polishing and C1/2ar surface paint removal, etc. Easy to remove glass cleans and removes paint, rust and oxidation. 【High performance】: Paint and rust removal are not damaged on the surface of the object, the grinding force is uniform, the processing effect is uniform and wear-resistant, the water resistance is strong, the plasticity is strong, the softness is good, it is suitable for various shapes that are removed from the grinder, the sander is weak and the