- Three high-speed HSS 4341 double spiral flute step drills.
- Double spiral flutes for efficient swarf clearance.
- Allows clog-free, precision drilling of 18 different size holes with just three bits.
- Size #2: Ø4-22mm in 2mm increments.
- Size #3: Ø4-30mm in 2mm increments.
- Supplied in a flip-up metal case.
Spiral Flute HSS 4341 Step Drill Bit Set 3pc
