IRWIN 10233CB Unibit 1/16" 9-Steps Cobalt Alloy Steel Step Drill Bit

Speed and reliability for installers who demand durable holes in thin metal and composite materials. The IRWIN Tools Unibit 10233CB Cobalt Step Drill Bit brings M35 cobalt alloy toughness to every job, delivering up to six times the life of standard step drills when cutting stainless steel, aluminum or brass. Its 9-step, single-flute geometry drills stepped holes from 1/16-inch up to 3/4-inch with consistent roundness and permanently laser-etched size markings for fast selection on the jobsite. The SpeedPoint tip guarantees quick starts and accurate placement — a must for mounting security cameras, running surveillance cabling, installing network hardware and mounting monitoring sensors. The radial concave flute design improves chip evacuation and reduces heat build-up, lowering the risk of workpiece damage and rework. At 6-inch maximum length and crafted for professional use, this Unibit step drill streamlines multi-size holemaking and reduces tool changes during installation. Add the IRWIN 10233CB to your kit to speed installations and improve first-pass quality — order now for faster, cleaner drilling on every site.

• Drills fast, clean stepped holes through thin metals — ideal for camera mounts, conduits and sensor enclosures
• M35 cobalt alloy HSS delivers extended life and reliable performance on stainless steel and hardened materials
• 9-step single-flute design produces true round holes from 1/16-inch to 3/4-inch with permanently laser-etched sizes
• SpeedPoint tip ensures quick starts and precise positioning for security, surveillance and networking installations
• Radial concave flute evacuates chips and reduces heat, improving finish and minimizing rework