High Quality Pair of Stainless Steel Plated 4 x 4 in with 1/4 in radius. Residential Ball Bearing Hinges Oil Rubbed Bronze. 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. Ball Bearing hinges provide smoother operation, prevents squeaking noises, reduces metal to metal friction providing a longer life.