... clogging, high grinding speed, good grinding surface polishing.3).Usage: Metal, automobile, hardware, musical instrument, glass, ceramics, wood, upholstery ... grinding and polishing for automobile, paint, wood, stone, metal and so on .Velcro disc with holes is better for ... there is no pollution.Suitable for metal, wood, automobiles, and furniture, especially for fine finishing. Abrasives: A/O, S/C, Fint ...