... ,4140 Alloy steel. stainless steel . C45 various precision shaft size 10mm to 2000 cm 1) stainless steel2) for ice ... set lathe , 20 Set grinder allow we achieve complet crankcase,shaft ,precision fitting ,heteromorphism parts maching service base on customer drawing ... ,zinc plating,nickel platingPrecision range0.005 mm/ 0.0002inch stainless shaft