FEATURES: {High-quality material} Made of high-quality whitewool.The wool is fine and pure white, not easy to shed, and wear-resistant. The polishing effect and service life are much higher than ordinary wool wheels. {Size}Diameter :3.86'' (98mm);Bore Diameter :16mm(for electric grinders and pneumatic grinders);Thickness:8mm. {Widely Usage}Widely used for fine polishing of stainless steel, copper, aluminum, glass, ceramics, wood, marble and other workpieces. When working, use it with a polishing paste suitable for the workpiece, and the polishing effect will be more significant. {Note}Applicable machine: Model 100 angle grinder, polishing machine.The installation hole diameter must be the same as the hole diameter of the wool wheel. You need to wear protective glasses and protective glove.