Set of 3/16" Thick, Wrought Steel, Black. Includes 4 Hinges(2 per shutter); 1 Set = 1 Window. MADE IN PENNSYLVANIA. Heavy Duty Tapered Strap Hinges are stamped and the edges are clean and straight. The hinges have a smooth and consistant surface as opposed to the texture of hand wrought hinges. A pin is included on the barrel to be inserted into a pintle.