Multi-Lock Tool eliminates the risk of expensive damage from interference piston-to-valve or valve-to-valve contact. Multi-Lock tool "locks" twin camshafts in place during timing belt replacement or engine overhaul. Fits onto sprockets and extends to hold sprocket teeth. Incorporates "variable pitch" adjustable arms to fit various diameters and tooth pitches. Unique design is fully adjustable to fit numerous applications including diesel injector pump sprockets and sprockets that are positioned closely together. Ratchet locking handle provides compact, strong lever action for secure positioning. Also includes extension bar for wider spaced cams ($25 value).