10235 Unibit #5 Step Drill Bit, 1/4 To 1-3/8 In.

The Irwin 10235 Unibit #5 is a stepped drill bit that eliminates the need to change bits when drilling multiple hole sizes. This single-flute, high-speed steel bit drills 10 different diameters in 1/8-inch increments, ranging from 1/4 inch to 1-3/8 inch, all in one tool. Perfect for contractors and DIYers who need precisely circular openings without the hassle of swapping bits.

The SpeedPoint tip penetrates faster and prevents walking on initial contact, making it ideal for drilling into thin materials such as stainless steel, copper, brass, aluminum, plastic, and laminates. The single-flute cutting edge provides greater control through the drilling process, allowing you to work with confidence across a variety of materials.

Features and Benefits

• Step Design Covers 10 Sizes: Drill 10 hole diameters in 1/8-inch increments from 1/4 inch to 1-3/8 inch without changing bits, saving time and improving efficiency.
• Single-Flute Cutting Edge: Ensures clean, perfectly circular openings every time and allows greater control through each step.
• SpeedPoint Tip: Penetrates faster and prevents bit walking on initial contact, especially beneficial for thin materials.
• Hex Shank Design: Three-flatted shank prevents slipping in the drill chuck while maximizing torque transfer without wobble.
• High-Speed Steel Construction: Durable, versatile material suitable for drilling soft metals, plastics, laminates, and other common materials.
• Versatile Material Compatibility: Works effectively on stainless steel, copper, brass, aluminum, plastic, and laminates.

Specifications

• Brand: Irwin
• Model: 10235
• Hole Size Range: 1/4 inch to 1-3/8 inch
• Step Increments: 1/8 inch
• Number of Sizes: 10
• Overall Length: 3-1/8 inches
• Shank Diameter: 1/2 inch
• Shank Type: Hex (3-flat)
• Cutting Edge: Single-flute
• Tip Style: SpeedPoint
• Material: High-speed steel