The Design House 188961 3-Pack Hinge 4inch in Matte Black has a 5/8inch radius corner, for use on residential duty wooden doors. These door hinges are made of steel with a staggered hole pattern. Each hinge has 8 holes and measures 4inch x 4inch x 1/2inch. These hinges do not have a removable pin, and screws are included. Designed and manufactured by Design House, the trusted source for quality lighting, hardware, plumbing, kitchen, and bath products for every taste and budget.