Specification:Full Mortise Door Hinge with Matching Screws for InstallationQty:18/30/50 PackDimensions:3.5″??3.5″Color:Oil Rubbed Bronze ORB/Satin NickelRadius Corner:5/8″ / 1/4″Thinkness:2mmMaterial: steelNote:The dimensions are measured by hand and may have an slight error of 0.1 to 0.2 inches. Feature??Durable – these professional grade hinges are made of high quality steel, Preferred material casting, durable and corrosion resistant, not easy to rust in humid environment.Mute – hinge bearings are of superior quality and smooth operation, our hinges are noiseless, there was no squeak when opening and closing doors.Easy to Install – the hinge installation is fast and convenient, and will not make you feel troublesome.Widely Used – suitable for apartment, hotel, office, hospital, school, home, house etc.Size – 3.5 ?? 3.5 inch door hinges, Including 5/8″ radius and 1/4″radius, with Oil Rubbed Bronzeand and Satin Nickel, smooth surface, each hinge has six holes with matching screws.Our hinges are made of durable iron structure and the door hinges operate smoothly, it has strong bearing gravity. Package Includes:Pack of 18/30/50 door hinges with matching screws for installation