... machined parts base on cusotmer drawing 1) Precision shaft with kurel2) Nick coating (Rohs)3) Carbon steel, brass, ... 20 Set grinder allow we achieve complet crankcase,shaft ,precision fitting ,heteromorphism parts maching service base on ... with us Surface treatmentBlacking,polishing,anodize,chrome plating,zinc plating,nickel platingPrecision range0.005 mm/ 0.0002inch precision shaft with Zinc Coating