Nine Piece Triple Square (12 point) Bits to Fit 4, 5, 6, 8, 10, 12, 14, 16 and 18mm Sizes. For head bolts, brake caliper bolts, door handle screws, axle bolts, and other applications. The 4 and 5mm bits have 5/16hex drive. The 6, 8, 10 and 12mm bits have 1/2hex drive. The 14 and 16mm bits have 5/8hex drive. The 18mm bit has a 3/4 hex drive. Item Weight: 15 ounces

Product Features:

• 4 and 5mm bits have 5/16" hex drive, 6, 8, 10 and 12 mm bits have 5/8" hex drive
• The largest sizes are designed to work on some tamper-proof applications