Updated kit includes 3 new adapters for wider application range. Tool installs harmonic balancer or drive pulleys that are pressed on the camshaft found on many G.M. Ford and Chryslers. Includes 12 adapters as follows: 7/16-20, 1/2-20, 9/16-18, 5/8-18, 3/4-16, M10-1.5, M12-1.5, M12-1.75, M14-1.5, M14-2.0, M16-1.5, M16-2.0, plus center screw, jam nut, thrust bearing & cap screw. All packed in blow-mold case.