A:Product Description1, China 15years experience precision investment castings ltd2, Material:C45 steel.3, Weight=670g4, Process:investment castings,drill holes.5, Surface:shot blasted,zinc plated.6, Used in ship industry.drill hole ID=10mm,use rear tooling and Ra0.8.7, Place of origin in zhenhai,Ningbo,China8, Tolerance in CT7 grade.9, Sampling in one month and production ability in 10ton per ...