Suitable for angle grinders, grinding machines, desktop grinders, hard alloy tools, workpieces and other non-ferrous metals, as well as for grinding non-metallic materials such as optical glass, ceramics, and stone. The diameter of the grinding wheel is 75mm, the aperture is 10mm, the thickness is 4mm, and the speed is 13300RPM. The grinding wheel is made by high-temperature sintering of metal steel and binder. It can effectively dissipate heat, reduce dust, has high toughness, and can withstand high temperatures. There are 5 grinding wheels in the packaging. Please choose the appropriate grinding wheel based on the diameter and speed of the machine tool spindle., Manufacturer: The Lord of the Tools