Cobalt Predator Step Drill Bit

Super Premium – Predator Cobalt Straight Flute Step Drills for drilling hardened materials. Predator™ Cobalt Step Drills are built for fast, accurate hole enlargement in stainless steel, sheet metal, high-carbon steel, cast iron, and other difficult-to-drill materials. Manufactured from premium cobalt steel, these step drills offer excellent heat resistance, longer cutting life, and dependable performance in demanding metalworking applications. Each drill features precision-ground cutting steps that produce clean, round holes while reducing chatter and vibration. Laser-marked size graduations make it easy to identify hole diameters as you work, while the hex shank design provides a secure grip in cordless drills, impact drivers, and drill presses. Ideal for electricians, fabricators, mechanics, HVAC technicians, maintenance professionals, and metalworking shops, Predator™ Cobalt Step Drills eliminate the need to constantly change drill sizes when enlarging holes in thin materials. Whether you’re opening electrical knockouts, enlarging existing holes, fabricating brackets, or working with stainless steel panels, Predator™ Cobalt Step Drills deliver smooth cutting performance and professional results. Features Premium cobalt steel construction Excellent performance in stainless steel and hard metals Superior heat resistance for extended tool life Precision-ground cutting steps for clean, accurate holes Laser-marked size graduations Reduced chatter and vibration Hex shank design for positive chuck engagement Multiple size ranges available Ideal for hole enlargement and fabrication work Applications Stainless steel Mild steel High-carbon steel Cast iron Sheet metal Electrical panels Conduit knockouts HVAC fabrication Automotive repair General metalworking Maintenance and industrial applications   Available Predator™ Cobalt Step Drill Sizes Size Range / Application Steps Shank Style Part Number 1/4″ – 7/8″ 3 Steps 3-Flat Shank DR-SD-CSB-338 3/16″ – 7/8″ 12 Steps Hex Shank DR-SD-CSB1238 1/8″ – 1/2″ 13 Steps Hex Shank DR-SD-CSB1314 9/16″ – 1″ 8 Steps Hex Shank DR-SD-CSB838 1/4″ – 3/4″ 9 Steps Hex Shank DR-SD-CSB938 7/8″ Hole for 1/2″ Conduit Conduit Size Hex Shank DR-SD-CSB1138 3/16″ – 1/2″ 6 Steps Hex Shank DR-SD-CSB614 1/4″ – 1-3/8″ 5 Steps 3-Flat Shank DR-SD-CSB1012   Questions? 800-350-8665