IRWIN 10234CB Unibit 3/16"- 7/8" Cobalt Alloy 12 Steps Steel Step Drill

Get consistent, clean holes fast for security and low-voltage installs with the IRWIN Tools 10234CB Unibit step drill. This step drill bit is engineered for professionals who install CCTV cameras, access control plates, and network enclosures—offering 12 precision steps from 3/16" to 7/8" so you can size holes on the fly without changing bits. Made from M35 grade cobalt HSS, the 10234CB delivers exceptional heat resistance and up to 6X longer life versus competing bits, while the radial concave flute evacuates chips for smoother cutting and less burring.

Practical features—like the self-starting split point to prevent walking and a three-flat shank to resist chuck slippage—mean faster setups and more accurate hole placement in sheet metal and thin materials commonly used in security and surveillance hardware. Whether you’re mounting camera housings, running conduit for monitoring cables, or fitting junction boxes, this step bit reduces downtime and tooling costs. Add the IRWIN 10234CB to your toolkit for reliable, repeatable results on every job—order now to speed up your next security or networking installation.

• Fast, accurate hole sizing: 12-step 3/16"–7/8" design lets technicians drill multiple hole diameters with one bit for quicker installations.
• Durable, long-life cutting: M35 cobalt HSS construction and radial concave flutes deliver up to 6X longer life for heavy use on metal.
• Reduced walking and slipping: Self-starting split point and three-flat shank prevent wandering and chuck slip for precise starts.
• Clean holes for professional installs: Smooth step transitions produce burr-reduced holes ideal for security enclosures and low-voltage panels.
• Saves time and tooling: Eliminates the need for pilot holes or multiple drill bits—perfect for CCTV, access control, and networking installs.