This is a 14mm 12 point socket with a 3/8″ drive. It is also often called a triple square or xzn socket. On a MKV and MKVI VW this socket is needed for: – removing the front struts from the knuckles, such as when changing struts or springs. – removing the rear calipers when changing brake pads or rotors(except the R32, it uses a 16mm socket, please see our other auctions for a 16mm socket). If you have any questions, feel free to ask. _gsrx_vers_476 (GS 6.4.4 (476))