COMP Cams Big Block Chevy Crank Nut is a two-piece assembly that allows you to turn your engine in either direction using a large diameter socket. This convenient tool is heavy-duty and hear-treated. This crank nut provides a secure method of attachment for the harmonic damper and other parts. PartNumber : cca322 Description : Two-In-One Professional Crankshaft Nut Assembly; Chevrolet Big Block Title : 322 Crank Nut, for CB (Pro) California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Uncategorized::Uncategorized