Comp Cams Crankshaft Socket w/1.255" ID crankshaft snout

COMP Cams crankshaft sockets accept 1/2 in. drive ratchets for versatility and easy engine rotation. They're precision-machined for an accurate fit over the crank snout, and their knurled retaining nut threads-on to sandwich a degree wheel in place. The nut can be loosened, while on the crank snout, so that the wheel can be turned independently of the engine when finding top dead center.