For removing alternator freewheels. Dr., 140mm 1 x M10 spline, with freemoving spline collar, 1/2" Sq. Dr., 115mm 1 x M10 spline with freemoving spline collar, 3/8" Sq. Dr., 80mm 1 x H8 1 x H10 2 x Draper TX-STAR®: T40, T 50 1 x Draper TX-STAR® 1/2" Sq.