4-Piece Tungsten Carbide Drill Bit Set – Masonry, Glass & Wood

Tackle any drilling project with confidence using this 4-Piece Tungsten Carbide Drill Bit Kit. Engineered with a four-edge serrated eccentric design and premium alloy steel construction, these versatile drill bits cut through concrete, masonry, glass, wood, brick, stone, and metal with ease — all in one convenient set.

Why Choose This Drill Bit Set?

• Four-Edge Serrated Design: The unique serrated cutting geometry reduces friction and dramatically increases drilling speed compared to conventional drill bits, delivering cleaner, more precise holes on the first pass.
• Tungsten Carbide Tipped: High-strength tungsten carbide tips withstand extreme heat and heavy load, maintaining sharpness longer and extending the overall service life of each bit.
• Eccentric Torque Structure: The eccentric design optimises torque transfer, allowing the bit to bite into hard surfaces quickly and efficiently — no extra steps or tools required.
• Wide Material Compatibility: One kit handles it all — concrete, brick, glass, plastic, wood, stone, and light metal — making it ideal for home improvement, renovation, and professional trade work.
• Four Sizes Included (6mm / 8mm / 10mm / 12mm): Whether you need a small pilot hole or a larger opening, this set has the right bit for the job.
• Alloy Steel Shank: Robust alloy steel shanks fit standard drill chucks and hammer drills for secure, wobble-free operation.

Product Specifications

• Material: Alloy steel with tungsten carbide tips
• Bit Type: Four-edge serrated eccentric (indexable masonry drill bit)
• Sizes: 6 mm, 8 mm, 10 mm, 12 mm
• Quantity: 4 pieces
• Compatible Surfaces: Concrete, masonry, brick, stone, glass, plastic, wood, light metal
• Made in: Mainland China

What's in the Box?

• 4 × High-Performance Tungsten Carbide Drill Bits (6 mm, 8 mm, 10 mm, 12 mm)

Perfect For

• Home renovation and DIY projects
• Masonry and concrete drilling
• Glass and tile installation
• Woodworking and general construction
• Professional tradework requiring versatile multi-surface capability

For safe drilling practices and tool use guidelines, refer to the OSHA Power Tools Safety resource.

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Note: Please allow 1–3 mm differences due to manual measurement. Colours may vary slightly between monitors and actual product.

Learn more: Drill bit

Frequently Asked Questions

Q: What materials can these tungsten carbide drill bits cut through?

A: These four-edge serrated drill bits are designed for multi-surface use, including concrete, brick, masonry, stone, glass, plastic, wood, and light metal — making them one of the most versatile drill bit kits available for both DIY and professional applications.

Q: What sizes are included in the 4-piece drill bit kit?

A: The kit includes four sizes: 6 mm, 8 mm, 10 mm, and 12 mm — covering a wide range of hole diameters for everyday and heavy-duty drilling tasks.

Q: Are these bits compatible with standard drills and hammer drills?

A: Yes. The alloy steel shanks are designed to fit standard drill chucks and hammer drills, providing a secure, wobble-free fit for smooth, accurate drilling on tough surfaces like concrete and brick.

Q: How do these serrated eccentric drill bits differ from regular masonry bits?

A: Unlike conventional masonry bits, the four-edge serrated eccentric design cuts more aggressively into hard materials, reduces friction, and improves drilling speed while producing cleaner holes — all without requiring additional cutting tools or steps.