Irwin Hanson 10310 Step Drill Bit #10 High Speed Steel Self-Starting 1/2 Inch

The Irwin Hanson 10310 is a #10 high-speed steel step drill bit designed for precision drilling in thin materials. This self-starting Unibit features a 1/2-inch maximum hole diameter and is engineered for professional performance in sheet metal, plastics, and soft metals.

Key Features:

• SpeedPoint tip design penetrates faster and prevents walking for accurate hole placement
• Single-flute cutting edge provides greater control and smoother transitions through each step
• Hex shank prevents slipping in drill chuck for secure operation
• High-speed steel construction for durability and heat resistance
• Ideal for drilling stainless steel, copper, brass, aluminum, plastic, and laminates

This step drill bit eliminates the need for multiple bits when drilling various hole sizes in thin materials, making it an essential tool for electrical, HVAC, and metal fabrication work. The self-starting design and advanced tip geometry deliver faster cutting speeds and cleaner holes compared to traditional step bits.