The Lisle Harmonic Balancer Pulley Damper Holding Tool for Honda and Acura, No. 77260, is designed with a 4" offset for holding the damper when removing and installing the crank bolt on many Honda and Acura engines. With a 50mm outer hex and large center opening to fit impact sockets, the tools is used with a 1/2" drive ratchet or breaker bar to hold the damper in place.