VOLKSWAGEN VW AUDI POLYDRIVE CAMSHAFT ADJUSTER M10 SOCKET 2.0L TOOL
This is a new Volkswagen 1/2" drive M10 Polydrive socket for the camshaft adjuster locking bolt. This is not aTorx or RIBE socket.
It is a special Polydrive type socket with 6 splines. 
This is the special tool number T40080.
It is about 50mm in length. 
This tool is needed on 2.0L direct injection engine as found in VW Touran 2004 and up, Audi A3 year 2004 and up, and Audi A4 year 2001 and up.