OTC (8074 Step Plate Adapter Set - 6 Piece Necessary for pulling and installing bearings, gears, or other parts found on hollow shafts or housings Can be used with Grip-O-Matic pullers and push pullers, as well as shop presses Includes numbers 8057, 8058, 8059, 8060, 8061, and 8062 Adapters are available separately