Compatible with all TC88, 96, 103 and 110 using B148 or B168 bearings. This kit will remove and install inner cam bearings on new and old model Twin Cams and Dyna Harleys. New Torrington-Koyo B-148 and B-168 bearings are also available in our store! This kit includes our improved collet design. Others sell a design where the entire back of the collet is threaded, with two slots cut into the threads for turning the wrench. It's simple, it's cheap, and it sucks. Use this design once or twice and you risk damaging the threads where the wrench contacts will require you to clean those threads now before you can remove the nut from the collet and use it again. We fixed this by moving the threads on the collet up for a more controlled grip and thread protection. We also completely redesigned the mounting plate, taking the engine apart to determine the correct hole locations. This kit features our "T" pins for easier chuck insertion and removal! The set has instructions! 100% Made in the USA.