6 Pcs Four-Flute Sawtooth Eccentric Twist Drill Bit, Concrete and Masonry Drill Bit Set, Set for Concrete/Glass/Tile/Wood/Metal, Hexagonal Shank Drills, Short bits, (4/5/6/8/10/12mm)

Tackle the toughest drilling projects with this versatile 6-piece drill bit set. Constructed from a premium alloy, these bits feature a specialized serrated design that reduces vibration and excels when drilling through concrete, glass, cast iron, tile, wood, and other challenging materials. The set of bits includes 6 basic sizes (4mm,5mm, 6mm, 8mm, 10mm and 12mm) to handle a variety of applications. Each bit features an innovative skewed head design and a double helix chip evacuator for effective chip removal and a smooth cutting action. Hexagonal shanks ensure a secure grip and are compatible with electric hand drills, cordless drills and bench drills. High-strength construction maintains excellent performance under high loads and temperatures, while the alloy coating enhances durability and wear resistance. When working with extremely hard materials, continuous water cooling is recommended for best results. These professional grade drills are fast and accurate, making them ideal for DIY enthusiasts and professional contractors alike.

• 【High-Strength Eccentric Drill Bit】Crafted from a high-strength alloy, this high-strength eccentric twist drill bit features an industrial-grade carbide tip with exceptional hardness and toughness. After fine polishing and rust protection treatment, it delivers sharp, burr-free performance for precise drilling in tough materials like concrete, bricks, and ceramics. This eccentric drill bit set is built to outperform standard masonry drill bits with its durable carbide drill bits design.
• 【Accurate and Efficient Design】The four-blade serrated eccentric drill bits design and eccentric structure reduce friction and minimize slipping or deflection, ensuring stable, efficient drilling. Precision machined and rust-proof, this 4-flute drill bit set is ideal for hard surfaces, providing clean, accurate holes every time. It's a reliable choice among drill bits for metal and concrete, offering the precision of a countersink drill bit set with the strength of masonry drill bits for concrete.
• 【Versatile Hexagonal Handle】With a universal 1/4” hex shank, this twist drill bit set fits all standard drills, impact drivers, and CNC rotary tools. The hexagonal handle offers a secure grip and compatibility with magnetic chuck adapters, making it perfect for both professional contractors and DIY enthusiasts. This drill bit set works seamlessly with hand drill tools and is as versatile as a wood drill bit set or metal drill bit set for steel.
• 【Wide Applicability】This eccentric 4-flute drill bit adapts to diverse materials, including glass, tiles, mirrors, wood, porcelain, brick walls, and marble. For harder surfaces like tile or concrete, use water cooling and gradual pressure to extend the bit’s lifespan and maintain performance. It's as effective as tile drill bits, glass drill bits for drilling holes in glass, and ceramic drill bit for pots, making it a must-have drill bits set for any project.
• 【Four-blade sawtooth design】:Four-blade sawtooth eccentric drill bit makes drilling easier and more efficient, easier to use than conventional drill bits, works more stably, drilling with drill bits is less likely to slip and can complete work faster. With 6 available size options (4/5/6/8/10/12 mm), you can tackle any task.1/4” hex shank fits all standard drills, impact drivers and CNC rotary tools, No wobbling with magnetic chuck adapters.