Product name: CNC Machined steel parts Material: Aluminum 6061/6063/6082, Aluminum 7072/7075, Stainless steel 304, stainless steel 316, carbon steel Q235, 45#steel, ASTM A36. Alloy steel 40Cr, 35CrMo, 42CrMo, Cast iron, cast steel, cast aluminum. Unit Weight: 0.5kg-1000kg, 1lbs-2000lbs Size scope: 5~5000mm, 0.2~200 inch Best Tolerance: Surface roughness: Ra0.8 linear dimension: 0.01mm Flatness: 0.02mm Concentricity: 0.02mm Parallelism: 0.02mm Perpendicularity: 0.02mm Custom style or not: Yes Certificate: ISO9001:2008