Bearings are sealed, pre-lubed and will provide years of trouble free service on your supercharger or idler pulley. Fits most GM type roots blowers 3-71 thru 8-71. Blowers include BDS, Blower Shop, Hampton, Littlefield, Kuhl, Mooneyham, Bowers, Donovan, Danakes but not SSI, DMPE, Fowler, Kobelco, Hammer or Chuck Ford blowers.
Bearing is also suited well for idler pulleys that use dual 6205 bearings such as Littlefield, BDS, RCD and many more.
Measurements are 2.048" O.D. x .590" thick with an .985" I.D. Bearings are sold individually.