... Red Nylon Grinding Wheel 2.Advantage:sharp,durable ,stable and economical 3.Colour:red/black/grey/green.ect we ... to 25cm(0.1" to 10"), having different core diameter and core sharp(like cycle, square, hexagon, etc.),Hardness: ... surface polishing and strip coating ,Machine fittings rust and burr cleaning ;and porcelains. ceramic ,marbles surface finish ,wood furniture , porcelain arts ,and so onFeature ...