... gear,sprial gear,internal gear,sprocket,chain wheel)transmission,reducer,shaft and sleeve etc. They are of good quality, small noise ... gear, internal gear, sprocket, chain wheel) transmission, gear box, reducer ,shaft and sleeve etc.ApplicationSuitable for various light vehicle transmissions, auto ... on teeth of gear.CertificateISO9001:2000Minimum quantityAccept trial order 40Cr worm drive shafts