Klann KL-- Mercedes Special Tool Flywheel rotating tool with gear wheels. Engine Barring Tool. This tool is used to allow precise positioning of the crankshaft for timing purposes. The tool has square drive. Used on Mercedes trucks models e.g. engines OM ACTROS as well as for all MAN -cylinder engines.Buy here samstagsales unimog_tools.htm kl-- Photos and contact info on Advertigo website.