Commercial Grade Ball Bearing Door Hinge 4 Inch Square Full Mortise Stainless Steel - 2 Pack- Highly Rust Resistant Pair of Commercial Ball Bearing Hinges - Stainless Steel Ball Bearing Hinges help prevent door squeaking Includes matching wood screws For door thickness 1 5/8" - 1 3/4", Gauge 3.3 mm Non-removable pin