PROFORM's Professional Crankshaft Turning Socket is for the serious engine builder and tuner. Easily attach an oversized degree wheel to the professional crankshaft turning socket and you're done! There's nothing better than an easy to read degree wheel when degreeing your camshaft! Product Features:Pro Series ModelFits Chrysler V8 CrankshaftsMade of Non-Marring AluminumEnables Rotation of Crankshaft When The Balancer Is Off