Heavy Duty Hinge 180 Degree Opening Angle Untreated, hardened Frame Part Support CAD/PDF File Heavy Duty Hinge, Opening Angle 180, Stainless Steel Hinge Heavy duty hinge with an opening angle 180 degree and detent position at 120 degree and 0 degree. MATERIALFrame Part: Stainless steel, untreated, hardenedDoor Part: Stainless steel, black coated, hardenedPins: Steel hardened