1/7Pcs Four Edged Serrated Eccentric Drill Bit Set Tile Drilling Concrete Special Electric Drill Bit Diy Accessories

Description: 3-16mm Chrome Vanadium Alloy Steel Serrated 4-Flute Drill Bit Set, delivers fast, precise and durable drilling performance for multiple hard surface applications. Features: 1. Superior Durability & Wear Resistance: Forged from industrial-grade chrome vanadium alloy steel with high-temperature quenching treatment, it offers exceptional resistance to abrasion, bending and fracture, lasts far longer than drill bits, effectively reduces replacement costs for long-term frequent use. 2. High-Efficiency Serrated 4-Flute Structure: Precision cut 4-flute serrated cutting edge made of high-hardness alloy enhances cutting force and realizes smooth chip evacuation, boosts drilling efficiency by 30 times compared with conventional drill bits, saves working time and produces clean, burr-free holes. 3. Anti-Slip Accurate Positioning: The sharp reinforced centering tip prevents slipping and offset during the initial drilling stage, enables easy and accurate positioning even on smooth non-porous surfaces such as ceramic tiles and marble, ensures exact hole placement and avoids accidental damage to workpieces. 4. Multi-Material Drilling Compatibility: Premium high-hardness alloy construction supports stable drilling on various materials including marble, metal, concrete, solid wood, brick and ceramic tile, covers all drilling demands of home renovation, DIY projects, professional construction and maintenance work, no need to purchase multiple separate drill bits for different materials. 5. Universal Hex Shank Design: Standard anti-drop hex shank fits perfectly with most electric drills, impact drills and rotary drills on the market, provides firm non-slip clamping, allows for quick installation and replacement, guarantees stable operation even under high-intensity working conditions. Specifications: Category: Serrated Masonry Drill Bit Set Material: Chrome Vanadium Alloy Steel Size: As picture Color: As picture Quantity: 1/7pcs Note: 1. Please allow differences due to manual measurement, thanks. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.