Product Description

This IRWIN Unibit #3 Cobalt Alloy Steel Step Drill Bit is engineered with M-35-grade Cobalt Alloy Steel steel for maximum life when drilling in tough steel. The SpeedPoint tip provides fast starts and features laser-marked sizes for easy reading. The radial concave flute design helps ensure an effective use of drilling power.

From the Manufacturer

Irwin Unibit Cobalt is made of high speed steel, this step drill bit will last longer in the toughest of materials. Irwin Industrial Tools 10233CB 3 9 Hole Sizes (1/4-Inch-3/4-Inch), 1/16-Inch Increments

About this item

• Drill bit is engineered with M-35-grade Cobalt Alloy Steel steel for maximum life when drilling in tough steel
• SpeedPoint tip for fast starts
• Drill bits feature a radial concave flute
• IRWIN drill bits have laser-marked sizes for simple identification
• Drills 9 hole sizes from 1/4" to 3/4" increments in 1/16" steps
• Drill bit is engineered with M-35-grade cobalt steel for maximum life when drilling in tough steel
• SpeedPoint tip for fast starts