... black, engraving fonts 3,ROHS products Product name Aluminum cap/cover Materials Available1. Stainless Steel: SS201, SS303, SS304 ... , SS316, SS416, SS4202. Steel:C45(K1045), C46(K1046),C203. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37 ... Al60637.OEM according to your requestProducts Availablebolts, screws, nuts, rivets, stem nuts, shafts(axles, spline shafts, dart shafts),gears ...