... chrome finish steel bits include 1/2" Dr. socket adaptor. 30mm hex bits 4, 5, 6, 7,8, 10, 12mm; 30mm spline bits ... ,M10, M12. 30mm star bits T20, T25, T30, T40, T45, T50, T55. 3/8" Dr. socket adaptor. 75mm hex bits 4, 5, 6, 7 ... , 8, 10, 12mm. 75mm spline bits M5 ...