The Abbey Bike Tools Big Drift Kit Modular Bearing Press is intended for use with the brand's Modular Bearing Press Only. Using them together, you'll find you can press in a wide variety of bottom brackets and headsets with minimal effort.
Each of the included drifts has been machined to fit a specific bearing size like a glove and is sized to the 1/2” acme thread, for consistency, so that the bearing or headset will go in straight each time.
Abbey recommends installing bearings one at a time, using the centring cone that comes with the press, to ensure they settle in straight with minimal fuss and no danger of damage, either to them, the frame or your tools.