10234 UniBit #4 Step Drill Bit, 3/16 To 7/8 In., Hex Shank

The Irwin 10234 UniBit #4 Step Drill Bit is a specialized cutting tool designed to drill multiple hole sizes with a single bit. Instead of changing bits repeatedly, this progressive step drill eliminates the need for bit swaps, saving time and reducing frustration on the job. It is ideal for drilling through thin materials such as stainless steel, copper, brass, aluminum, plastic, and laminates without walking or binding.

The single-flute cutting edge delivers greater control and produces true round holes with each step. The SpeedPoint tip penetrates faster and helps prevent bit walking, especially when working with delicate or thin stock. The hex shank design prevents slipping in your drill chuck, ensuring consistent grip and reliable performance throughout the drilling process.

Features and Benefits

• 12 Progressive Hole Sizes: Drills from 3/16 inch to 7/8 inch in 1/16 inch increments, eliminating the need to swap bits between sizes.
• Single-Flute Cutting Edge: Provides superior control and produces clean, true round holes while allowing the bit to work smoothly through each step.
• Hex Shank Design: Prevents slipping inside the drill chuck for dependable grip and consistent drilling results.
• SpeedPoint Tip: Penetrates faster and resists walking, making it especially effective for thin materials and challenging surfaces.
• High-Speed Steel Construction: Delivers durability and long tool life across a variety of drilling applications.
• Reliable Shank: The specialized hex shank offers a secure grip for consistent drilling performance and fewer replacements.

Specifications

• Brand: Irwin
• Model: 10234
• Type: UniBit #4 Step Drill Bit
• Size Range: 3/16 inch to 7/8 inch diameter
• Increment: 1/16 inch steps (12 hole sizes total)
• Shank Type: Hex shank
• Shank Diameter: 3/8 inch
• Flute Design: Single flute
• Material: High-speed steel
• Maximum Material Thickness: 1/8 inch