We make our hinges from a solid block of brass for twice the thickness and strength of most hinges! The wings are solid brass. Countersunk holes allow mounting screws to fit flush. The baked-on finish is guaranteed against tarnish for 10 years of gleaming beauty. The cylinder is precision-machined for a perfect fit and the stainless steel pin will never corrode or bind. When the hinge is open flat it is 4" x 4". One pair of our large size finials fit each hinge.