Alltrade 648637 Kit 12 Harmonic Balancer Puller and Installer Tool Set For removing and installing harmonic balancers that have threaded holes For removing balancers, kit contains 2/3 combo yoke, 5/8-in x 5/8-in national fine center screw, center point piece Meets or exceeds ANSI standards. Lifetime warranty. Tool set for removal and installation of harmonic balancers that have threaded holes Removal pieces: combo yoke, national fine center screw, center point piece and bolt pairs Installation pieces: national fine center screw, thrust bearing, forcing nut and jaw nut Adapters included: M12-1.5, M14-1.5, M16-2.0, 7/16-Inch-20, 1/2-Inch-20, 9/16-Inch-18 and 3/416 Kit 12 includes 22-Piece for removal and installation of harmonic balancers with threaded holes