Review on 🔧 Premium 19mm Harmonic Balancer Socket & 50mm Crankshaft Crank Pulley Wrench Holder - Ideal for Honda and Acura Engines by Chris Kidd

Firstly they are not really used simultaneously when working with a Honda engine - there seems to be some confusion. Their purpose is to ensure the operation of the engine WITHOUT clockwise rotation of the crankshaft. Any clockwise rotation of the crankshaft is fraught with a valve timing error - on an engine with interference. Do not do that. The hex head is used with an impact wrench to loosen the crankshaft bolt. Since the crankshaft bolt is loosened counterclockwise, any rotation of the engine during impact will be in the direction of normal engine rotation. Another fun looking tool is used to position the crankshaft at the right time, always turning the crankshaft counter-clockwise. It is also used to hold the crankshaft in place during final tightening of the crankshaft balancer bolt. You cannot properly tighten this bolt without holding the crankshaft and this tool is designed for that purpose. Lots of videos online about how to use them. Oh, and don't forget, the oil pump balancer shaft is only in the right place every 3 turns.