... gears, worm gears,Module from M1-M8 3, Material:C45, 40Cr. 42CrMo. GG25,316L. 1, ISO9001:2008 ... of gears, worm gears3, Standard and non-standard4, Material C45, 40Cr. 42CrMo. GG25,GGG40,GGG45, S.S 304, ... (spur gear, bevel gear, sprial gear, internal gear, sprocket, chain wheel) transmission, reducer ,shaft and sleeve etc. ... best service & timely shipments12) Accept trial order OEM Sprocket Wheel Gear