10502zr Unibit Step Drill Set, Hss, 3-piece

The Irwin 10502ZR Unibit Step Drill Set is a professional-grade collection of three high speed steel (HSS) step drill bits designed to produce clean, round holes in metal, wood, and plastic. Step drill bits use a single-fluted cutting edge that allows you to drill through multiple material thicknesses and create perfectly circular holes with minimal wobble, making them ideal for metalworking, fabrication, woodworking, and general repair projects.

This 3-piece set includes sizes #1, #2, and #3 Unibits, giving you versatile coverage for common drilling tasks. The hardened high speed steel construction resists wear and maintains sharpness even under high RPMs, while the optimized geometry minimizes chatter and vibration for smoother operation and superior hole quality.

Features and Benefits

• High Speed Steel Construction: Offers exceptional hardness and heat resistance for extended tool life and reliable performance under demanding conditions.
• Single-Fluted Cutting Edge: Enhances stability and chip evacuation, allowing deeper drilling without binding and producing consistently clean, circular holes.
• Three Essential Sizes: Includes #1, #2, and #3 Unibits to handle a variety of drilling diameters and applications in one convenient set.
• Reduced Vibration: Optimized geometry minimizes chatter, delivering smoother operation and less user fatigue for more comfortable, controlled drilling.
• Versatile Material Compatibility: Works effectively on metal, plastic, and wood applications, making it suitable for diverse drilling tasks.

Specifications

• Brand: Irwin
• Model: 10502ZR
• Set Size: 3-piece
• Included Bits: #1, #2, #3 Unibits
• Material: High Speed Steel (HSS)