Irwin 10235 Unibit5 1/4-Inch to 1-3/8-Inch 1/2-Inch Shank Step Drill Bit 20260313 the Model 122XL is ideal

the Model 122XL is ideal for transport directly to the job site

Full range of sockets from standards to deeps

all the way up to 1

For Iron and steel the capacity is 9/16-inch for medium metals

Irwin 10235 Unibit5 1/4-Inch to 1-3/8-Inch 1/2-Inch Shank Step Drill Bit 20260313 the Model 122XL is idealIdeal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates Single flute cutting edge for greater control through steps Patented single flute cutting edge gives the user a true round hole every timeAmazon. ca Product Description IRWIN Tools 10235 Unibit Sheet Metal Step Drill Bit offers 10 different hole sizes in one single bit, from 1 4" to 1 3 8" in increments of 1 8". Ideal for drilling true,