1.Material:stainless steel,iron 2.Guarantee quanlity 3.Different sizes adn finishing 4.20 years experience manufactry DetailsA.Production Name: Stainless steel flag hing, flag hinges with bearing, stainless steel hinges B.Material:Stainless steel,IronC.Finishing:Chrome,Satin,Golden ,ect.D.Thickness:2-4 mmE. Nature : flag hingeF. Usage : door and windowG.: Weight:220g