... 40Cr,42CrMo,45# Quality Professional manufacturing, high-precision Machine CNC engine lathe, milling machine, drilling machine, hobbing machine, grinder, gear shaper, testing center ... drawings or samples. MOQ 1000 pcs, we also can accept small quantity order Price our price is competitive ,exact quotation is ... drawings for better quotation and other details. precision stainless steel worm and worm gear