Set camshaft timing with the JEGS 11" precision degree wheel. It is the only one to have for serious engine builders. Accurately degree your cam (set camshaft timing) while also checking TDC, BDC, centerline and valve timing. Features separately highlighted intake valve, exhaust valve, intake centerline and exhaust centerline events in precisely marked and easy to read 1º increments. Includes three crank bolt bushing inserts (to fit 7/16", 1/2" 5/8" and 3/4" crank bolts) and a steel washer to fit virtually every application. Add JEGS Degree Wheel Pointers (555-81619), sold separately, to further simplify degreeing (timing) your cam. Made in USA