... Machined to Drawing or Samples 4,ISO, MTC metal good surface polishing nuts Production range:We are a professional manufacturer of ... .8-3.25, Weight: ranging from 0.50g to 10000kg6, Surface finish: polishing, oiled (rust-prevented), zinc-plated, nickel-plated, ... skilled QC with record put down.Universal inspection tools: hardness tester, Height ruler, Depth ruler, Outside ruler, Venire Caliper, etc. ...