6Pcs Step Drill Bit Saw Drill Bit Set Titanium Milling Cutter 4-12 4-20 4-32mm 3 6 8mm For Woodworking Metal Core Hole Opener

Description

Premium 6‑Piece Step Drill Bit Set – Titanium‑Coated Milling Cutters

Upgrade your workshop with this versatile 6‑piece step drill bit set, engineered for precision drilling in wood, metal, plastic, and composite materials. Each bit features a robust titanium coating that resists wear, reduces heat buildup, and extends tool life, making it the perfect core‑hole opener for both professional craftsmen and DIY enthusiasts.

Key Highlights

• Six sizes in one set: 4 mm × 12 mm, 4 mm × 20 mm, 4 mm × 32 mm, plus 3 mm, 6 mm, and 8 mm step bits for flexible drilling options.
• Titanium‑nitride coating: Provides up to 30 % longer lifespan, smoother cuts, and superior corrosion resistance.
• Step‑drill design: Enables clean, burr‑free holes from 3 mm to 32 mm without changing bits.
• High‑speed steel core: Delivers maximum rigidity and reduces wobble for accurate, repeatable results.
• Universal shank: ¼‑inch (6.35 mm) straight shank fits standard drill presses, hand drills, and magnetic bases.
• Multipurpose use: Ideal for woodworking, metalworking, electrical conduit, HVAC, automotive, and DIY projects.

Why Choose This Step Drill Bit Set?

Whether you’re creating clean pilot holes for wiring, enlarging existing openings, or shaping precise countersinks, these titanium‑coated step bits deliver consistent performance. The progressive step geometry eliminates the need for multiple drill sizes, saving time and reducing tool inventory.

Performance Benefits

• Fast, chip‑free drilling with minimal heat generation.
• Reduced tool wear thanks to the hard‑wear titanium layer.
• Precise hole diameters for a professional finish every time.
• Enhanced safety – no sudden bit breakage or slippage.

Compatibility & Applications

Designed for standard ¼‑inch chucks, these bits work seamlessly with:

• Hand drills and cordless drivers
• Bench‑mounted drill presses
• Magnetic drill bases
• Portable rotary tools (with appropriate collet)

Perfect for:

• Wooden furniture and cabinetry
• Metal sheet and pipe drilling
• Electrical conduit and cable routing
• Automotive and aerospace component fabrication

Package Includes

• 1 × 4 mm × 12 mm step drill bit
• 1 × 4 mm × 20 mm step drill bit
• 1 × 4 mm × 32 mm step drill bit
• 1 × 3 mm step drill bit
• 1 × 6 mm step drill bit
• 1 × 8 mm step drill bit

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