... steel,iron 2.Guarantee quanlity 3.Different sizes adn finishing 4.20 years experience manufactry DetailsA.Production Name: 3mm steel hinge/stable door ... hinge /stainless steel door hinge B.Material:Stainless steel,IronC.Finishing:Chrome,Satin,Golden ... ,bending, punching, laster cutting,threading,F. Usage : door and windowG. Inspection : QC & QA