For adjusting camber & lower control arm length. 10mm provides about 1 degree of additional negative camber.
We package them in the two most popular groups, 16mm and 22mm. More can be added seperately, if desired. The 16mm kit includes 10mm, 4mm, & 2mm, to of each. The 22mm kit includes 10mm, 6mm, 4mm, & 2mm, two of each.