idh by St. Simons' professional grade, solid brass full Mortise door hinges are among the very best in the industry. Each high-strength hinge body is manufactured from an extruded solid brass bar and machined to high tolerances. Combined with hand polished finishes, the result is a hinge that is highly durable and extremely attractive - sure to enhance any entry way. This 3" x 3" hinge is one in a family of 4 sizes. The other sizes offered in this line are: 3-1/2" x 3-1/2", 4" x 4", and 4-1/2" x 4-1/2". this product is sold in pairs.