Drill Multiple Hole Sizes with One Bit. IRWIN Unibit Step Drill Bits make precise clean holes in a variety of thin materials including stainless steel, copper, brass, aluminum, plastic, and laminates. Offered in single and double flute designs, Unibit Step Drill bits have precise step control and SpeedPoint™ tip for fast starts. Unibit double-flute designs accelerate your drilling with 2X Faster Drilling* versus a single-flute design.
- SPEEDPOINT™ TIP FOR FAST STARTS
- DOUBLE FLUTE DESIGN, 2X FASTER DRILLING*
- USE WITH AN IMPACT OR STANDARD DRILL
*Average of first 10 holes vs. single-flute IRWIN Unibit #4 10234 in 1008 Steel.