VW and Audi Strut Nut Socket This 1-3/4" long socket is built for VW and Audi FWD cars in which the top shock-retaining nut is recessed inside the strut tower. The tool’s center bore allows you to hold the strut shaft from turning, using a 7/8" (22 mm) hex key and appro-priately sized wrench. No. 7707 – VW / Audi strut nut socket.