Irwin Unibit #1M Metric Hss Step Drill – 4–12 Mm Range, 1/4″ Shank, Usa-Made

Description

IRWIN USA Made Unibit # 1M Metric Step Drill 4 – 12mm 1/4″ Shank 

The IRWIN Unibit #1M High-Speed Steel Metric Hole-Enlarging Step Drill Bit is ideal for drilling holes into thin materials, such as stainless-steel, copper, brass, aluminum, plastic and laminates. Each drill bit uses a single-flute cutting edge that gives a true, round hole and provides greater control through steps. The hex shank helps prevent slipping in the drill chuck. The #1M drill bit creates 4mm to 12mm holes with 9 steps.

UNIBIT 1M 9 Hole Sizes (4 mm-12 mm), 1 mm Increments

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