... zinc interlocking balance wheel: 1,Material:Hardened metals 2,Processing :stamping,broaching 3.OEM customize Environmental zinc interlocking balance wheelItem name:balance ... tapping, riveting, grindingSurface treatment:Hot galvanized, polishing, chrome/zinc/nickel plating, PVC coating, anodize, E-coatingApplicable industry: ... IGS, STP, STL and X-T) Environmental zinc interlocking balance wheel