The Lisle 17mm Harmonic Balancer Socket, No. 77060, is a heavy duty impact socket that can be used on Honda engines and other engines that use a 17mm hex pulley damper bolt or other 17mm applications. It is made with heat-treated, impact quality alloy steel and is designed with more than two times the standard socket mass to direct more energy to removing the bolt, according to the company. It it used with 1/2" drive.