19mm Harmonic Balancer Socket: Honda engines that use a 19mm hex pulley damper bolt or other 19mm applications. Install/remove Honda 19mm damper bolts in minutes. Function: 19mm Harmonic Balancer Socket is suitable for removing the lug nuts from the tightening wheel. 50mm Crankshaft Crank Pulley Wrench Holder Tool used to remove/install most Acura and Honda engine crankshaft bolts. Advantages: .