11pc Special Socket Set / Ball Joint Socket Set 1/2in.Dr Sizes : 22 - 75mm 4 Tooth Sockets for removing castellated lock nuts found on ball joints / axles and other applications. Sizes mm : Outer / Inner Tooth 22.0 / 15.5 | 3.3 x 2.9 26.0 / 18.5 | 3.8 x 2.8 30.0 / 21.5 | 4.3 x 3.8 33.0 / 25.0 | 4.0 x 3.8 37.0 / 27.5 | 4.8 x 3.8 44.0 / 33.5 | 5.3 x 4.8 50.0 / 38.5 | 5.8 x 4.8 56.0 / 44.5 | 5.8 x 4.8 63.0 / 50.5 | 6.3 x 5.8 69.0 / 55.5 | 6.8 x 5.8 75.0 / 61.5 | 6.8 x 5.8