Locks chain tensioner in position on VW and Audi petrol engines with a cam belt driving one camshaft & then transferring drive by chain to the other camshaft.
A must during assembly & disassembly on 4, 6, 8 cylinder engines.
WARNING: California prop 65 - This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/