A two in one wrench for oil service on many popular makes including Audi A4 | A6 | Volkswagen Golf IV | T4 | T5 | Passat | Porsche Boxster & BMW. Double ended with 19mm single hex and M16 Spline (tamperproof). Additional Information A two in one wrench for oil service on many popular makes including Audi A4 | A6 | Volkswagen Golf IV | T4 | T5 | Passat | Porsche Boxster & BMW. Double ended. 19mm single Hex and M16 Spline (tamperproof). Two tools in one. Time saver.