Precision metal gear worms 1.Transmission parts 2.Single thread worm 3 ... is acceptable Precision metal gear worms1.Name:Precision metal worms gear2.Material:20CrMnTi3.Modulus:4.12mm4.Process:rough forging, ... thread worm,high quality and accuracy6.Related products:worms,shaft worms,small&large module gear,transmission parts,etc.7. ... Welcome customers' drawings and enquiry. Precision metal gear worms