IRWIN INDUSTRIAL TOOL CO - ACH 10231 Unibit Step Drill Bit 1/8-1/2

IRWIN INDUSTRIAL TOOL CO - ACH 10231 Unibit Step Drill Bit 1/8-1/2

The IRWIN INDUSTRIAL TOOL CO - ACH 10231 Unibit Step Drill Bit 1/8-1/2 x 1/32 #1 delivers precise, controlled step drilling for a range of light-gauge materials. Designed for compatibility with standard drill chucks, this Unibit provides a compact solution for creating multiple hole diameters with a single tool. Its stepped profile reduces the need to change bits and helps produce consistent, clean holes in thin metal, plastic, and other sheet materials.

Drills And Accessories

This step drill is a practical accessory for drills used in both workshop and field settings. It pairs well with corded and cordless drills, enabling technicians and DIYers to work efficiently when multiple hole sizes are required. The design simplifies hole enlargement and deburring, saving time compared with swapping several standard twist bits. For projects that involve drills, grinders, or saws, the Unibit functions as a focused tool for accurate sheet metal work and trim tasks.

Professional Power Tools For Automotive Work

Built with professional applications in mind, the 10231 Unibit is suitable for automotive power tools tasks where precision and repeatability matter. Whether servicing panels, routing wiring, or fitting brackets, this step drill supports automotive technicians and fabricators who rely on consistent hole quality. It integrates into heavy duty automotive power tools workflows, reducing setup and tool changes on repetitive jobs.

Product Details

Model: 10231. Type: Unibit/Step Drill Bit. Size Range: 1/8-1/2 with 1/32 increments, marked for quick size selection. The stepped geometry enables smooth cutting progression and improved chip clearance compared with single-diameter bits. Its compact form factor makes it easy to store with drill accessories and carry in tool kits for on-site work.

For professionals and serious hobbyists focused on power tools and automotive power tools, this Unibit is a versatile, time-saving choice that complements drill-based toolsets. Fast shipping.