Ball-Bearing Hinge is a hinge equipped with ball bearings to reduce friction. They are ideal for any interior door If you have any issues with your doors squeaking today, our ball bearing hinges are sure to solve that problem. Our hinges are compatible with most brands of hinges including Penrod. Steel Plated, Includes matching screws, 4 Holes in zig-zag pattern, Gauge .097"(2.5 MM) Typical use: 1 5/8" to 1 3/4" thick doors Enjoy the benefits of a ball-bearing hinge: Smoother operation, prevents squeaking noises, less metal-to-metal friction and longer life!