This harmonic balancer installation tool is designed for use with late model Ford crankshafts. Made from high quality steel material. This tool makes installing the harmonic balancer simple and easy. Just thread the end into the crankshaft and rotate the nut/bearing combo against the harmonic balancer. Sold individually.Proform Harmonic Balancer Puller 66525Specifications: Feature/Benefit Large Bearing for Smooth Installation Category Tools Material Steel Make Ford Description_ABR Damper Tool Description_SHO Balancer Installer Description_INV Harmonic Balancer Installation Tool Description_DEF Harmonic Balancer Puller Description_ASC Harmonic Balancer Installation Tool Description_ASC Fits Ford Description_ASC 2004 and Up Description_ASC M12 Description_LAB HARM BALANCER INSTALL TOOL Description_DES Harmonic Balancer Installation Tool Description_DES Fits Ford Description_DES 2004 and Up Description_DES M12 Description_EXT Harmonic Balancer Installation Tool Description_EXT Fits Ford Description_EXT 2004 and Up Description_EXT M12 x 1.5, 6 Description_MKT This harmonic balancer installation tool is designed for use with late model Ford crankshafts. Made from high quality steel material. This tool makes installing the harmonic balancer simple and easy. Just thread the end into the crankshaft and rotate the nut/bearing combo against the harmonic balancer. Sold individually.