OTC 4421 Pilot Bearing Attachment For Slide Hammer - Removes pilot bearings, thrust washers, and smaller bearings hidden in a shaft or housing. Jaws require a minimum of 5/8" opening and can range up to a max of 1‐1/2" diameter. Min/Max Reach is 1/8" to 1". Works with both 5/8 ‐ 18 as well as M18‐1.5 threaded hammer shanks.