Material: 416, 410, 420, 430 ,430F, stainless steel round bar, solid bar, tolerance: h8,h9, h10, h12 roughness Ra0. ... 4-0.6-08 416 stainless steel round bar diameter: 6mm-300mm, unit length:wihtin 6mtolerace: h8,h9 ... -0.6, Ra0.6-0.8Supplying: RAW MATERIAL, raw material with heat treatment, bright steel , ground and polished round barpackage:: oil-protected+ waterproof material ...