* 14pc adaptor: 10-12mm, 12-14mm
    14-16mm, 15-17mm, 16-18mm,
    18-20mm, 20-22mm, 22-24mm,
    25-27mm, 28-30mm, 30-34mm,
    32-36mm, 35-40mm, 38-42mm
* 1pc small driver handle: (a)
* 1pc medium driver handle: (b)
* 1pc large driver handle: (c)