Shop Fox D3117 Brass Guide Bushing Set 5/16-Inch O.D. - 1/4-Inch I.D.; 3/8-Inch O.D. - 9/32-Inch I.D. 7/16-Inch O.D. - 11/32-Inch I.D.; 1/2-Inch O.D. - 13/32-Inch I.D. 5/8-Inch O.D. - 17/32-Inch I.D.; 3/4-Inch O.D. - 21/32-Inch I.D. 51/64-Inch O.D. - 5/8-Inch I.D.; 1-Inch O.D. - 7/8-Inch I.D. 2 Lock Nuts; Plastic Case Included