The Design House 188920 3-Pack Hinge 3.5inch in Matte Black has a square corner, for use on residential duty wooden doors. These door hinges are made of steel with a staggered hole pattern. Each hinge has 6 holes and measures 3-1/2inch x 3-1/2inch x 7/16inch. 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.