This set includes a special, 9" long, compact head, reversible ratchet and four specialty hinge-specific bits. Contains T40, T45 and the M8 and M10 12-point (triple square) spline bits. The chassis/year/bits required are numerous - and sometimes replacement bolts require a bit different than those that the factory installed! We provide all four known hinge bits used on the late model VW/Audi.