Environmental zinc interlocking balance wheel: 1,Material:Hardened metals 2,Processing :stamping,broaching 3.OEM ... from 5T, 35T, 63T,108T,200T,315T to 630T punching machines, totally 20 sets.We can provide in-house design, tool ... , (IGS, STP, STL and X-T) Environmental zinc interlocking balance wheel