Universal harmonic balancer installation tool. Includes screw in inserts for 7/16"-1/2"-5/8"-3/4" threaded openings. Fits most popular engines including Chevy, Ford, Mopar, Pontiac, Olds, and Buick. Uses a pilot stud, which keeps the harmonic balancer perpendicular to the crankshaft's ceneterline for a bind-free installation. Thrust bearing and protective washer allows the drive nut to rotate freely so the balancer is pressed on smoothly and evenly. Don't damage your balancer or crank by using a hammer ! This tool will save you valuable parts. Moroso 61744 Moroso harmonic damper balancer installation tool 61744 HOURS: 11:00 am to 6:00 pm Monday - Friday Eastern Standard Time We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. We will not ship to freight forwarding - expediting companies. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.