Because the top shock retaining nut on VW and
Audi FWD cars is recessed inside the strut tower,
conventional methods for removing and installing
it just won't work. The 1-3/4" long socket reaches
down into the recess and fits the slot in the top of
the nut. Center bore allows you to use a hex key
to hold the strut shaft from turning, and the 7/8"
(22mm) hex can gripped with a wrench.