Kit comprises VS777, VS777E and VS780 to provide timing belt pulley locking, to retain timing positions, on single and twin cam petrol and diesel engines. These locking tools act as a second pair of hands to hold camshafts in position during timing belt replacement. Huge range of applications from closely positioned sprockets on many twin cams to more widely spaced cam/injector pump sprockets on certain diesel engines. VS777 incorporates adjustment to cover different sprocket diameters and tooth pitches.