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, 8062, 8063, 8064, 8065, 8066, and 8067 Adapters are available separately