[DETAIL] Feature 【High-Strength Eccentric Twist Drill Bits】Crafted with industrial-grade carbide tips, the WOYUOSN high-strength eccentric twist drill bits offer superior hardness, toughness, wear resistance, and impact resistance. These drill bits are finely polished and rust-resistant, ensuring sharp and burr-free performance. Whether you're working with concrete, glass, brick, or wood, these bits provide long-lasting durability and precision, making your drilling tasks smoother and more efficient. 【Versatile Drill Bit Set with Hex Shank Design】This masonry drill bit set comes with a range of sizes—5/32", 1/4", 5/16", 3/8", and 1/2"—and features a universal hex shank design for secure grip and compatibility with various drills. This increased versatility makes the WOYUOSN set ideal for both professional contractors and DIY enthusiasts, providing the right tool for any job. The hex shank ensures better holding power and minimizes the risk of slippage during use, offering a reliable drilling experience. 【Quick and Efficient Drilling with Low Resistance】Designed for handheld drills, these high-strength eccentric twist drill bits provide precise positioning and reduced friction. This significantly minimizes the chances of slipping or deflection during drilling, especially when working on tough surfaces like concrete, brick, and ceramic pots. These bits are engineered to deliver fast drilling performance while maintaining accuracy, making them a must-have for any serious drilling project. For optimal results, use impact mode sparingly on delicate materials. 【Industrial-Strength Cross-Head Tip】Each drill bit features a cross-head tip that enhances cutting power and precision. This professional-grade design ensures that the bit cuts through materials effortlessly, providing cleaner and more accurate holes. When working with harder surfaces such as glass or ceramic, it's recommended to cool the drill with water and control the speed for best performance and longevity of the bit. 【Wide Range of Applications for Multiple Materials】The WOYUOSN drill bits are suitable for a wide variety of materials, including glass, ceramics, tile, mirrors, flower pots, wood, porcelain, brick walls, marble, and thin metal sheets. For harder materials like ceramic tiles, marble, glass, and granite, use water to cool the bit and apply gradual pressure while maintaining a tilted angle that transitions to vertical drilling for precision and safety. This set truly offers versatility for both professional and home-use projects. Package Includes 7PCS four-edge serrated drill bit set 6PCS four-edge serrated drill bit set 5PCS four-edge serrated drill bit set 4PCS four-edge serrated drill bit set [ATTRIBUTES] - Hign-concerned Chemical: None - Brand Name: DUTRIEUX - Origin: Mainland China - Hign-concerned Chemical: None - Brand Name: DUTRIEUX - Origin: Mainland China - Model Number: Four-edge serrated drill bit - DIY Supplies: Woodworking - Material: High Speed Steel - Type: Ceramic Tile Drill Bit - Use: Masonry Drilling - Length: 3-12MM