Features: Allows the crank shaft pulley and/or harmonic balancer bolt to be broken loose Secures the pulley in place not allowing it to rotate during removal and reinstallation of crank bolt. Tool head passes through tight areas and onto the center slot on the pulley. After the tool head is into proper position the secure bar can be easily attached to the head. Specially designed to work on 1990 and newer Honda and Acura models