Step Drills

UNIBIT® 3 - 6mm Cobalt Alloy Steel Step Drill Bit 11103

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. Cobalt Alloy Steel Step Drill Bit Set 10502CB

Engineered to take on the most demanding drilling jobs, this 3 pc. Unibit® cobalt hss step drill bit set will be a go-to in any tradesman's tool box.With an m-35 cobalt alloy high-speed steel construction, these bits are made to power through heavy-duty...

UNIBIT® 3/16 - 7/8" #4 Cobalt Alloy Steel Step Drill Bit 10234CB

Irwin tools 10234cb Unibit® cobalt sheet metal step drill bit offers 12 different hole sizes in one single bit, from 3/16" to 7/8" in increments of 1/16".Ideal for drilling true, round holes with a smooth, clean finish in a variety of materials like...

UNIBIT® 1/8 - 1/2" #1 Cobalt Alloy Steel Step Drill Bit 10231CB

This Irwin Unibit® #1 cobalt step drill bit is engineered with m-35-grade cobalt steel for maximum life when drilling in tough steel.Laser-marked sizes enable easy reading.The radial concave flute design helps ensure an effective use of drilling power...

UNIBIT® 9/16 - 1" #20 Cobalt Alloy Steel Step Drill Bit 10220CB

Step drill bit, material cobalt, steam oxide finish, number of hole sizes 8, shank size 7/16" step thickness 1/8" size range 9/16" - 1". Sizes included 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", number of flutes 1, shank type hex, bit length 3"...