Best Hinges supplies hardware and tools for architectural, consumer, industrial, and residential markets worldwide. With state-of-the-art research, manufacturing, and quality control capabilities that incorporate today’s newest techniques, procedures, and equipment Best continues to deliver innovative, high-quality products. 4-1/2in x 4-1/2in Steel Full Mortise Ball Bearing Standard Weight Square Corner Hinge # 068431 Prime Coat Finish.