#12 Black Oxide Step Drill Bit (7/8 in.–1-3/8 in.)

Milwaukee’s #12 step bit delivers jam-free performance with a dual‑flute design and Rapid Strike tip for fast, accurate starts. The black oxide coating and 3‑Flat Secure‑Grip shank maximize durability and reduce slippage, ideal for drilling or enlarging holes in steel, aluminum, ductwork, and plastics.

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Key Features:

• Jam-Free Performance: Dual-flute geometry for faster cuts and better control in cordless drills
• Rapid Strike Tip: Up to 2X faster starts with less heat for longer tip life
• Durable Black Oxide Finish: Resists wear and extends overall bit life
• 3-Flat Secure-Grip Shank: Reduces chuck slippage for consistent drilling
• Wide Size Range: 12 steps drill or enlarge holes from 7/8 in. to 1-3/8 in.

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Specifications Table:

Specification	Details
Bit Material	Black Oxide
Drill Bit Type	Step
Drill Bit Type(s) Included	Step
Individual/Set	Individual
Material Application	Aluminum, Duct/Sheet Metal, Steel; also suitable for PVC/plastics
Shank Style	3-Flat Secure-Grip
Shank Diameter	1/4 in
Bit Diameter	7/8 in. to 1-3/8 in. (#12)
Bit Length	3 in
Assembled Depth	3.058 in
Assembled Width	1.38 in
Assembled Height	1.38 in
Step Increments	0.125 in (1/8 in.)
Features	Jam-free performance, Rapid Strike tip, Laser-engraved reference marks, Dual-flute design
Tools Product Type	Power Tool Accessory
Self-Feeding	No
Number of Pieces	1

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Frequently Asked Questions (FAQ):

Q: What materials can this step bit drill?
A: It’s designed for steel, aluminum, duct/sheet metal, PVC and other plastics.

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Q: What shank does it use?
A: A 3‑Flat Secure‑Grip shank with 1/4 in. diameter to reduce slippage in the chuck.

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Q: How many steps and what sizes are included?
A: 12 steps cover 7/8 in. through 1-3/8 in. in 1/8 in. increments.

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Q: Is it suitable for cordless drills?
A: Yes, it’s optimized for high‑speed cordless drilling and all standard drill/drivers.

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Q: How is sizing indicated during drilling?
A: Laser‑engraved reference marks remain visible while drilling for accurate sizing.

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Precision Meets Power in Black Oxide

This sculptural, tapered form brings a clean, purposeful energy to any workshop. The satin black oxide finish and laser‑engraved markings feel refined yet robust, making every pass precise and confident. Pair it with a high‑torque drill for effortless holes through metal and PVC. It’s the beautifully engineered essential that elevates everyday projects to a professional standard.

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Drill cleaner, faster holes in metal and plastic—add this Milwaukee step bit to your kit today.

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