3Pcs HSS Straight Groove Step Drill Bit 3-12mm 4-12mm 4-20mm Nitride Black Hex Wood Metal Hole Cutter Core Drilling Tools Set

Azabooti presents the hss step drill bit for multi material use. This drill bit set covers wood, metal, and more with stable, clean cuts.

Unlock precise, clean holes with less effort. This 3-piece HSS Straight Groove Step Drill Bit set is designed to deliver fast, smooth drilling across multiple materials, including wood, aluminum, plastic boards, and more. The progressive step design lets you drill holes of different diameters with a single bit, reducing bit changes and increasing your workflow efficiency. Built to withstand demanding tasks, these bits combine durable high-speed steel with a nitride black finish for superior wear resistance and long-lasting performance. Perfect for DIY projects, workshop tasks, and professional metalworking touch-ups, you’ll appreciate the cleaner cuts and consistent results every time.

Key features

• High-Speed Steel construction for durability and longevity
• Three sizes: 3-12mm, 4-12mm, and 4-20mm for versatile drilling ranges
• Nitride black finish with hex shank design for reduced wear and reliable chuck grip
• Core drill bit design for precise, clean cuts in metal and other materials
• Face shank to prevent slippage during chucking; two groove designs for faster, smoother cutting
• Depth and diameter clearly marked on each step for easy dialing in your hole size

What you can do with these bits

• Drill precise holes in metal, wood, aluminum, plastic boards, and insulating boards with thicknesses around 5mm or less
• Create multi-diameter holes in a single operation, saving time on repetitive projects
• Upgrade your toolbox for better performance on metalworking, cabinetry, and DIY furniture builds

Care and usage

• Keep bits clean and dry after use to prevent corrosion
• Use an appropriate drill speed for the material you’re working with to maximize life and performance
• Ensure proper clamping and secure chuck grip before drilling
• Always wear eye protection and follow standard workshop safety practices

Specifications

• Material: High-speed steel
• Color: Black
• Sizes: 3-12mm, 4-12mm, 4-20mm
• Includes: 3 x HSS Straight Groove Step Drill Bits
• Application: Drilling and hole reaming in wood, aluminum, plastic boards, insulating boards, and other materials
• Shank: Face shank design with two grooves for fast, smooth cutting
• Depth/diameter marks on steps for quick reference

Brand promise

• Reliable performance for DIY enthusiasts and professionals alike
• Compact, 3-piece set to cover common hole sizes in one convenient package
• Crafted with attention to detail for consistent results across materials

Features

• Drill faster with high speed steel construction
• Achieve multiple hole sizes in one bit
• Nitride black finish enhances wear resistance
• Hex shank design for reliable chuck grip
• Core drill bit design for clean, precise cuts
• Versatile set includes 3-12mm, 4-12mm, 4-20mm

Specifications

• Materials: High Speed Steel HSS, Nitride black finish, Hex shank

Frequently Asked Questions

What materials can this hss step drill bit handle?

The set is designed for wood, aluminum, plastic, and metal. Its HSS core and nitride coating offer durability across these materials.

How many hole sizes are included and what are they?

The set includes three sizes: 3-12mm, 4-12mm, and 4-20mm. Each bit provides progressive steps for different hole diameters.

Is there free shipping and who is the brand?

Azabooti offers free shipping on eligible orders. This multi material drill bit set is part of our tool collection designed for DIY and professional use.