Stamping Parts,Butt Hinge 1)Material:Steel,Stainless steel,Aluminum 2)Finish:Mill,Zinc Plated,Polished 3)Kinds of style,size. Stamping Parts,Butt Hinge1)Material: Steel,Stainless steel,Aluminum.2)Finish:Mill,Zinc Plated,Polished3)Kinds of style,size available. Stamping Parts