This kit includes a variety of ball style insert bits for a multitude of applications. The ratchet works with all 1/4″ hex insert bits and 1/4″ drive sockets The extension doubldes as a T-shaped speed handle when inserted inton ratchet head Includes T10-T55 ball torx, 2-10mm ball hex, 3/32″-3/8″ ball hex, 1/4″ dr. 4″ extension, 1/4″ dr flex ratchet bit handle, 1/4″ dr magnetic bit holder