

SM3STQRSD-B | Alpha Onsite+ Step Drill Tuffbox Pro Set (3 Piece)
This comprehensive 3-piece set contains the complete range of Alpha Onsite+ Spiral Flute Step Drills. Housed in the durable Tuffbox Pro, these bits feature quick-change shanks for impact drivers and AlTiN coating for long-term durability. The set covers a drilling range from 4mm up to 30mm.
Important: The use of quality cutting fluid is mandatory to prevent heat buildup and maximize tool life.
Key Features
Complete Range: Includes 4-12mm, 4-20mm, and 6-30mm step drills.
Spiral Flute: Drills 3x faster with effortless cutting control.
AlTiN Coated: Reduces heat wear on the cutting edges for extended life.
Impact Ready: All bits feature 1/4" Quick-Change shanks.
Set Includes
Sizes: 4-12mm, 4-20mm, 6-30mm