It is specially designed for polishing concave areas, such as magnetic wheels, motorcycle wheel manifolds, metal, jewelry, metal, stainless steel, aluminum products, wood, plastic, ceramics, glass and watch industries. These scrub mops are made of nylon mesh impregnated with abrasive particles. Nylon has high tensile and tear resistance. Mop diameter: 1x50mm, 1x75mm, 1x100mm Spindle: 6mm, maximum speed: 3000 RPM Grit: Green 180 Red 320 Colour:red+green Material:high tenacity fiber Size:100 x 6mm 75 x 6mm 50 x 6mm Package Contents: 6 x sanding mop Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.