Product name: Staped hinge Material: Stainless steel, alloy steel, carbon steel. Aluminum, copper, iron Q235, 45#steel, 40Cr, 35CrMo, 42CrMo. C20, SS304, SS316 Unit Weight: 0.05kg-20kg, 0.1lbs-40lbs Size scope: 50~1000mm, 2~40 inch Customizable or not: Yes Certificate: ISO9001:2008 Origin: China