Precision hydraulic fitting with plating zinc,We fabricate metal ... we have are 100 sets of CNC machines that the precision tolerance control can be +-0.02mm.2,120 sets ... ,2,Micrometers3,Height gages,Depth gages.4, thread gages,ring threads gages with many sizes,NPT,NPTF,BSPP,BSPT,NH ... Plating layer thickness gauge8,Many go.no-go pins. Precision steel hydraulic fitting with plating zinc is available.