Step Drills

UNIBIT® 5 - 35mm High Speed Steel Step Drill Bit 11105ZR

Irwin Unibit® step drill bits are ideal for drilling holes in just about any type of thin material.General purpose high speed steel Unibit® step drill bits are perfect for use in mild steel, copper, brass, aluminum, plexiglass, wood, and laminate.Most...

3 Pc. High Speed Steel Step Drill Bit Set 10502ZR

Irwin tools 10502zr 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...

UNIBIT® 1-1/8" #13 High Speed Steel Self-Starting Step Drill Bit 10313ZR

This Irwin Unibit® #13 high-speed steel fractional self-starting step drill bit features a single-flute cutting edge for greater control through each of its 2 steps.The hex shank helps prevent slipping in a drill chuck.Use this reliable drill bit to...

UNIBIT® 3/8" #12 High Speed Steel Self-Starting Step Drill Bit 10312ZR

Engineered with a high-speed steel speedpoint tip for fast starts, the Unibit® #12 3/8"Hss fractional step drill bit makes true round holes every time.It's ideal for general use on materials such as mild steel, copper, brass, aluminum, plastic, wood, and...

UNIBIT® 7/8" #11 High Speed Steel Self-Starting Step Drill Bit 10311ZR

Irwin Unibit® step drill bits are ideal for drilling holes in just about any type of thin material.General purpose high speed steel Unibit® step drill bits are perfect for use in mild steel, copper, brass, aluminum, plexiglass, wood, and laminate.Most...

UNIBIT® 1/2" #10 High Speed Steel Self-Starting Step Drill Bit 10310

This Irwin Unibit® #10 high-speed steel fractional self-starting step drill bit features a single-flute cutting edge for greater control through each of its 2 steps.The hex shank helps prevent slipping in a drill chuck.Use this reliable drill bit to...

UNIBIT® 7/8 - 1-1/8" #9 High Speed Steel Step Drill Bit 10239

This Irwin Unibit® #9 high-speed steel fractional self-starting step drill bit features a single-flute cutting edge for greater control through each of its 2 steps.The sharp speedpoint tip penetrates fast and helps prevent walking, while the hex shank...

UNIBIT® 1/4 - 1-3/8" #5 High Speed Steel Step Drill Bit 10235

The Irwin Unibit® high-speed steel fractional self-starting step drill #5, 1/4" - 1-3/8", is ideal for drilling clean, smooth holes in mild steel, copper, bass, aluminum, plexiglass, wood, and laminate.Crafted of high-speed steel, it has a speedpoint tip...

UNIBIT® 3/16 - 7/8" #4 High Speed Steel Step Drill Bit 10234

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) save time by eliminating the need to change drills when drilling round holes in thin materials.Each smaller size drill also acts as a pilot for...

UNIBIT® 1/4 - 3/4" #3 High Speed Steel Step Drill Bit 10233

Unibit®, 1/4" to 3/4" step drill, 9 hole sizes from 1/4" to 3/4" in 1/16" increments, maximum material thickness 1/8", 3 flatted shank, shank size 3/8", single fluted cutting edge assures true round holes & allows greater control, carded. Irwin Tools...

UNIBIT® 3/16 - 1/2" High Speed Steel Step Drill Bit 10232

This Irwin Unibit® #2 high-speed steel fractional self-starting step drill bit features a single-flute cutting edge for greater control through each of its 6 steps.The sharp speedpoint tip penetrates fast and helps prevent walking, while the hex shank...

UNIBIT® 1/8 - 1/2" #1 High Speed Steel Step Drill Bit 10231

Irwin 10231 Unibit® #1 13-step 1/4-inch step drill bit, 1/32-inch steps (1/8 - 1/2") save time by eliminating the need to change drills when drilling round holes in thin materials.Each smaller size drill also acts as a pilot for the next size.Patented...