... ,Material:steel, stainless steel, brass 2,Finished: plating, oxide,anodized 3,All size as requet 1) main machines used: automatic precision ... 50mm with tolerance up to +/-0.01, length from 0.3 to 180mm with tolerance to +/-0.02, other centerless grinding ... , sport equipment, musical instrument etc.6) OEM orders are welcome. lifting Nut