3SP1 4.5X4.5 630 Ives Hinge Standard pin material are: Brass Hinge Steel Pin, Stainless Steel Hinge Stainless Steel Pin, Steel Hinge Steel Pin 3-Knuckle Spring Hinge, Standard Weight, 4-1/2" x 4-1/2", Satin Stainless Steel 3-Knuckle Spring Hinge, Standard Weight, 4-1/2" x 4-1/2", Satin Stainless Steel
