Designed for V6 4v common rail diesel, chain driven engines. Used for turning over & positioning the crankshaft during removal & installation of the camshaft timing chain. Also contains crankshaft aligning pins (with flats) & side alignment pins for crankshaft to cylinder head. Applications: Audi: A4 | A5 | A6 | A8 | Q7 | Allroad, VW: Phaeton | Touareg, Porsche Cayenne