Impact step drills

1.this impact duty electrical step drill bit kit is optimized for impact drivers, drill/driver compatible, give 5X longer life, 2X faster holes.
2. Rapid strike tip provides fast and accurate starts A dual spiral flute combined with the rapid strike tip delivers up to 2x faster holes than competitive impact step bits.
3. Reduces early shank breaks, Laser engraving for clear stop on size identification.

Size:

4-12mm, step 5, Material: M2, 135° split point head, Hex shank

4-12mm, step 9, Material: M2, 135° split point head, Hex shank

4-20mm, step 9, Material: M2, 135° split point head, Hex shank

4-30mm, step 12, Material: M2, 135° split point head, Hex shank