. Material:HSS 4241,Titanium coated

. Included:

  4-12mm(5 Step: 4mm, 6mm, 8mm, 10mm, 12mm)

  4-20mm(9 Step: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)

  4-32mm(15 Step: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm)
. Quick-change 1/4"hex shank