100% brand new, uninstalled product. Mainly used for iron and non-metal, stainless steel machine stone and plastic repair and grinding, and welding welding scar, impact parts of the burr of the burr can be interchangeable with resin cymbal wheel use. It has the advantages of high elasticity, good self-sharpening, high grinding efficiency, good heat dissipation, low noise, long service life, etc. This product is 60#, mainly used for grinding the surface of rough workpieces, such as valve casting parts, Angle iron, steel plate, and other metals grinding rust, deburring. Plastic hole cover, hollow design. It has good anti-blocking heat dissipation, moisture-proof, anti-static, low noise .