Irwin 10233CB Unibit Cobalt Step Drill Bit, 1/4–3/4 In, 9 Steps

The Irwin 10233CB Unibit Cobalt Step Drill Bit is a versatile drilling solution that eliminates the need to swap bits when creating multiple hole sizes. With nine stepped diameters ranging from 1/4 inch to 3/4 inch in 1/16-inch increments, this single bit handles a wide range of hole sizes for fastening and fabrication tasks.

The step drill bit design reduces bit walking and chatter, and the SpeedPoint tip provides fast penetration for quick drilling starts. This makes the Unibit 10233CB an efficient choice for professionals and serious DIY enthusiasts working with thin materials such as stainless steel, copper, brass, aluminum, plastic, and laminates.

Features and Benefits

• Nine Hole Sizes in One Bit: Drill diameters from 1/4 inch to 3/4 inch with 1/16-inch increments, eliminating bit changes and reducing project downtime.
• Cobalt Construction: Built with cobalt alloy steel for durability and long life, especially suited for drilling tough materials.
• SpeedPoint Tip: Provides quick penetration and reduces bit walking in thin materials, delivering faster drilling starts.
• Single Flute Cutting Edge: Engineered for greater control through the step increments.
• Hex Shank Design: Prevents slipping in the drill chuck, ensuring secure grip and consistent performance throughout the drilling process.
• Efficient Step Profile: Built-in step design enables faster drilling with less walking and chatter.

Specifications

• Brand: Irwin Industrial Tools
• Model: 10233CB
• Diameter Range: 1/4 inch to 3/4 inch
• Number of Steps: 9
• Step Increments: 1/16 inch
• Shank Type: Hex shank, 3/8 inch diameter
• Material: Cobalt alloy steel
• Cutting Edge: Single flute
• Tip Design: SpeedPoint