1 3/8" x 6 Spline
AK220000 fits A220 uni-cross
AK421000 fits A421 uni-cross
AK622000 fits A622 uni-cross
AK824000 fits A824 uni-cross
AK036000 fits A036 uni-cross

        1 3/8" x 21 Spline
AK421121 fits A421 uni-cross
AK622121 fits A622/ A600 uni-cross
AK824121 fits A824
AK036121 fits A036 uni-cross

        1 3/4" x 20 Spline
AK622120 fits A622/ A600 uni-cross
AK824120 fits A824 uni-cross
AK036120 fits A036 uni-cross

        1 3/4" x 6 Spline
AK824134 fits A824 uni-cross
AK036134 fits A036 uni-cross