IRWIN Tools Unibit Sheet Metal Step Drill Bit Set is a selection of the most popular Unibit step drill bits in the low diameter range (below 7/8″). Ideal for drilling true round holes with precise control in a variety of materials like sheet metal, metal plates, aluminum, fiberglass, plastics, plexiglass, and wood. The specially designed cutting edge drills true, round holes for a smooth, clean finish, and the SpeedPoint tip penetrates fast, prevents “walking,” and eliminates the need for a pilot/starting hole
Features
- 3 most popular Unibit sizes cover a wide range of applications
- SpeedPoint tip prevents “walking,” gets fast starts, and eliminates the need for pilot/starting hole
- Recommended for sheet metal, metal plates, aluminum, fiberglass, plastics, plexiglass, and wood






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