Irwin 10234 Unibit #4 12-Step High Speed Steel 3/8-inch Step Drill Bit, 1/16-inch Steps (3/16- to 7/8-inch).
The need to change drills when drilling round holes in thin materials is eliminated, saving time.
Each smaller size drill acts as a pilot for the next size.
Made from industrial-grade high-speed molybdenum steel heat treated for maximum durability.
Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic, and laminates.
The SpeedPoint tip penetrates faster than previous Unibits and prevents walking.
The non-skid tip does away with the need for center punches; the 3-flatted hex shank prevents slipping in the drill chuck.
Drill diameters are etched in the flute for easy identification.
Backed by a full lifetime warranty.
