National Hardware N830-243 Satin Nickel 5/8 in. Round Corner Door Hinge 4'' (1-UNIT) Heavy-gauge cold-rolled steel for added strength Flush pin for finished appearance Five knuckle, full mortise design Round corners Screw holes are countersunk Removable pin for easier installation National Hardware is the leader in builders hardware today with more than 15 product categories and over 7,500 SKUs. As a global business, we continue to focus on providing the best hardware and service to our valued customers. Brand Name: National Hardware Length: 4 in. Finish: Satin Nickel Product Type: Door Hinge Number of Holes: 8 Pin Type: Removable Hardware Included: Yes Packaging Type: Bagged Radius: 5/8 in. Spring Return: No Material: Steel Hinge Type: Mortise Design Self Closing: No Width: 4 in.