Petrol-Twin-Cam-Setting-Locking-Tool-Kit-Sealey-VS171-Designed-to-lock-the-camshafts-on-twin-cam-multi-valve-engines-in-order-to-stop-them-rotating-out-of-timed-position-during-removal-of-cam-belt-Incorrect-timing-can-cause-serious-damage-to-inlet-&-exhaust-valves-due-to-contact-with-piston-head-Saves-time-by-removing-the-need-to-re-time-the-engine-following-cam-belt-changes-Colour-coded-investment-cast-locking-tools-&-precision-machined-pins-ensure-accurate-fit-&-aids-quick-too