The kit includes 2 ea. 2.5mm hex key wrenches, 2 ea. 1.5mm hex key wrenches, 4 ea. 8mm set screws, 4 ea. 6mm set screws, and 4 ea. 3mm set screws. 1/2" I.D. bearings included are: 3/4" O.D., 1" O.D., and 1-1/8" O.D. 1/4" I.D. bearings included are: 1/2" O.D., 5/8" O.D., and 3/4" O.D. 3/16" I.D. Bearings included are: 3/16" O.D., 1/2" O.D., 5/8" O.D. and 3/16" O.D. Also Included: 2 ea. 11/16" O.D. x 1/2" I.D. and 2 ea. 7/16" O.D. x 1/4" I.D. shaft collars, 1ea. 9mm, 13mm, 16mm, and 19mm bearings all with 5mm I.D. measurements and 1ea. 22mm O.D. x 8mm bearing.