4 Tooth Drill Bit High Strength Eccentric Drill Bit Set for Metal/Wood/Glass/Cement. Four Blade Serrated Eccentric Drill bits, Serrated Drill bit setShort bits,Dry Drills,5 Piece Sizes: 6+6+8+10+12mm

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Precision Eccentric Design：Unique 4-flute geometry ensures 30% faster chip removal compared to standard drill bits, reducing heat buildup and extending lifespan. Ideal for deep-hole drilling in hardwood and aluminum alloys Versatile set: 5-piece drill set includes 6+6+8+10+12 mm sizes, ideal for drilling holes of different sizes in concrete, glass, cast iron, cement, tile and wood. Quality construction: Drill bits made of high-strength alloy material with serrated design and eccentric structure for durability and longer service life Precision design: Hexagonal shank ensures a secure grip and prevents slippage, fits a wide range of professional drill bits, and eccentric construction reduces wear and maintains drilling accuracy. Versatility：1/4” hex shank fits all standard drills, impact drivers and CNC rotary tools (compatible with DeWalt, Makita and Bosch). No wobbling with magnetic chuck adapters MULTI-MATERIAL MASTER: Designed for use with glass, ceramic tile, wood (oak, MDF), plastic (ABS, PVC) and non-ferrous metals (aluminum, brass). Not recommended for stainless steel or cast iron Perfect For： Metalworkers: Drilling stainless steel plates up to 1/2" thickness Carpenters: Creating clean holes in hardwood flooring & furniture DIY Enthusiasts: Installing shelves/racks through mixed materials Automotive: Modifying exhaust pipes & body panels without burrs