2PK Bi-Fold Door Roller

2 Pack, Wood Closet Door Roller, 1-3/16 in. Concave Roller, Bottom Mount. This is a 1-3/16 in. concave bronze ball bearing roller assembly that installs into a 7/16 in. deep by 2-15/16 in. long mortised pocket on each end of the solid woodcloset door bottom rail. The roller assembly is held in place by two 3/4 in. long screws. The bracket is stamped steel with a 1-3/16 in. brass concave roller installed. Rides on a metal track installed onto the floor. Used by a variety of manufacturers of solid wood closet doors.