IRWIN Unibit 10232 Step Drill Bit

IRWIN Unibit 10232 Step Drill Bit, #2, 3/16'' to 1/2'' x16

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IRWIN Unibit 10233 Step Drill Bit #3, 1/4'' to 3/4'' x16

The IRWIN Unibit® 10233 Step Drill Bit #3 (1/4"- 3/4" diameter in 1/16" increments) is designed to drill perfectly round holes in thin materials with less effort than other bits. It also drills through wood, composition board plus plexiglass and plastics that often crack with conventional bits. The high-speed steel fractional self-starting drill bit will cut steps of progressively larger diameters and drill up to 9 hole sizes with a single bit, not an entire costly set. Cutting edge enters one step at a time to cut rapidly in small bites without over-taxing motor.

The 10233 step drill bit #3 features a 3/8" shank and 1/8" step thickness.

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