This 12 mm triple square is supplied with a permanent 1/2" drive base with an overall length of 160 mm. The 12 mm is used for all 4 cyl. diesel and 4 cyl. TDI head bolts bolts from 1984 onward and VR6 head bolts. Some newer applications include the MK4 (A4) steering wheel removal. Top quality Metalnerd brand made from SAE8660 tool steel.
Not for impact tool usage.