This is the tool that is needed to remove the rear calipers on the Mk5(2006-2009), For Mk6(2010-2014) For Mk7(2015-2018) For Golf/GTI/Rabbit For Jetta (except R32 and R Models) They use a 16mm socket). It is also used to remove the front struts from the steering knuckles. It has a 3/8" Square Drive and its short lengths allows you to easily reach behind the calipers to loosen and remove the bolts. If in doubt what size is needed, measure the bolt from the one tip to the other as shown in the picture, and that dimension is the size of the tool that is needed.