1. Removes pilot bearings, pump bearings, brushings. 2. Removes all sleeve-type bearings with 1/2"~1-1/2" (12~38mm) inside diameter. 3. Structure design, gently turning the small wrench can produce a strong pull force. 4. The overall use of chromium vanadium just manufacturing, high hardness. 5. Ideal for automotive flywheel, motorcycle wheel, bicycle wheel, generate bearing, machine bearing etc.