Imperial Keyway Broach Set Includes Broach Sizes 5/16D 3/8D 7/16D 1/2D Bush Diameters 1 7/16 | 1 9/16 | 1 11/16 | 1 13/16 | 1 15/16 | 2 3/16 | 2 7/16 | 2 15/16