Irwin Hanson 10232CB 2-Piece Cobalt Step Drill Bit Set 3/16"-1/2" 1/16" Increments

The Irwin Hanson 10232CB is a professional-grade 2-piece cobalt step drill bit set designed for drilling multiple hole sizes in a single operation. This versatile set includes bits that drill 6 hole sizes ranging from 3/16" to 1/2" in precise 1/16" increments, making it ideal for sheet metal, plastic, and thin materials.

Key Features:

• Cobalt steel construction for superior heat resistance and extended tool life
• Drills 6 different hole sizes with each bit: 3/16", 1/4", 5/16", 3/8", 7/16", and 1/2"
• Step design eliminates the need for multiple drill bits and frequent bit changes
• Self-starting split point tip prevents walking and ensures accurate hole placement
• Single-flute cutting edge for faster material removal and smoother holes
• 3-flatted shank prevents slipping in drill chuck
• Ideal for HVAC, electrical, plumbing, and general metal fabrication applications

Cobalt step bits maintain their hardness at high temperatures, making them perfect for drilling through stainless steel, sheet metal, and other tough materials. The graduated step design automatically deburrs as you drill, producing clean holes without additional finishing work.