Quality Assurance: Crafted with precisiousness, this set of 6 dry diamonds drill bits is designed for professional and DIY woodworking projects. These bits are built to deliver high performance and durability. Material Excellence: Made from high-speed steel, these center drill bits are engineered for masonry drilling. Ideal for granite, porcelain tile, ceramic, and marble, they ensure smooth and drilling without the risk of breakage. Versatile Use: Each bit in the set is equipped with a hex shank, providing excellent compatibility with standard drills. The variety of sizes, including 1/4'', 5/16'', 3/8'', and 1/2'', allows for versatile applications across different materials. Safe and Efficient: These drill bits are designed to minimize dust and debris, ensuring a clean work environment. The absence of high-concern chemicals makes them safer for both the user and the environment. DIY Supplies Essential: Whether you're a professional builder or a hobbyist, this set is a must-have for your toolkit. The robust construction and precision engineering make it suitable for a wide range of construction and renovation tasks. Description/Features: Our diamond drill bits feature an innovative dry drilling design integrated with internal lubrication, enabling efficient cooling and drilling without water. This feature allows for convenient and mess-free operations. Enhanced with a diamond coating, these drill bits achieve faster drilling speeds. A surface plating prevents rust, and a depth mark on each bit aids in executing projects. The 1/4-Inch hex shank is universally compatible with various drilling tools including electric drills, hand drills, bench drills, and angle grinders. The use of vacuum brazed diamond technology extends the lifespan and performance of the bits. Specifically designed to operate dry, the bits contain a wax lubricant that melts during drilling to cool the cutting surface. However, for extended life and additional cooling, water can still be used. Ide