The IRWIN 10312ZR Step Drill Bit is ideal for drilling holes in thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates. Featuring a patented single-flute cutting edge, it ensures perfectly round holes and provides greater control through the steps. Its 3-nut shank prevents slippage in the drill chuck, while the SpeedPoint tip improves penetration and prevents walking. Made of high-speed steel, this bit is strong and durable, measuring 3/8″ and weighing 2 pounds.

Features

• Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
• Single-flute cutting edge for greater control through steps
• Patented single-flute cutting edge gives the user a true round hole every time
• 3 flatted shank prevents slipping in drill chuck
• New speed point tip penetrates faster than previous unibits and prevents walking