Four Spiral Flute Cobalt Step Drill Bit, 7/8"–1-3/8" (19 steps)
Cobalt HSS step drill bit with four spiral flutes for smoother cutting. TiAlN coating increases hardness and cutting speed. Includes 7/8" to 1-3/8" steps; suitable for metal, aluminum, plastic, and wood. Noted for quality and fast cutting, with mixed durability feedback
Highlights
- four cutting edges for speed
- coated for harder materials
- wide size range
Pros
- four spiral flute design
- TiAlN coating for hardness
- broad step range (7/8" to 1-3/8")
- fits metal, aluminum, plastic, wood
- sharp cutting edges
Cons
- mixed durability feedback
- tips may break after use
Best For
Features
- Four spiral flutes provide faster, smoother cutting
- TiAlN coating with 89HRC surface hardness for tougher materials
- M35 cobalt HSS step drill suitable for metal, wood, plastic, aluminum
- Drill bit range from 7/8" to 1-3/8" with 1-1/8" and 1-3/8" labeled sizes
