IRWIN 10231CB Unibit 1/32" 13-Steps Cobalt Step Drill Bit

Tackle installation and fabrication tasks faster with the IRWIN Tools Unibit 10231CB Cobalt Step Drill Bit — engineered to deliver durable, repeatable holes for security, surveillance and low-voltage installations. This Unibit step drill bit combines M35 cobalt alloy construction with a SpeedPoint tip and 13 precision-formed steps to cut through stainless steel, mild steel and thin-sheet materials while minimizing bit changes. The single-flute design produces clean, concentric holes and reduces burrs, making it ideal for mounting cameras, running conduit and drilling panel access for monitoring and networking gear. Laser-etched step markings inside the flute keep sizes visible throughout the bit’s life, and compatibility with standard quick-change chucks gets your team back to work faster. Finished in titanium nitride/black oxide for heat resistance and extended edge life, the 10231CB balances long-lasting performance with consistent hole control. For security installers and contractors who need reliable, repeatable drilling in tough metals, this Unibit Cobalt Step Drill Bit is a go-to choice — add it to your kit and order now for faster, cleaner installs.

• Fast, accurate stepped holes in a single bit — reduces bit changes and speeds up installs for security, surveillance and networking work
• M35 Cobalt construction for extended life when drilling stainless steel and other tough alloys
• SpeedPoint tip and single-flute design for quick starts and clean, burr-free holes in thin metal, aluminum, brass and plastics
• Laser-etched step sizes for instant identification on the job and consistent repeatable hole sizing
• Fits standard quick-change chucks for seamless use with drills and drivers on-site