Enhance your woodworking and plastic drilling projects with this high-quality Combined Countersink and Drill Bit, crafted for precision and durability. The drill bits are made from robust carbon steel, while the countersink is forged from premium 45# steel, ensuring a long-lasting tool designed to withstand extensive use. This versatile tool is ideal for drilling, chamfering, deburring, and countersinking tasks, making it a valuable addition to any toolbox. Key Features: · Durable Construction: Drill bits made from carbon steel paired with countersinks made from high-quality 45# steel for extended service life and reliable performance. · Multi-Functional Design: Specifically engineered to perform drilling, chamfering, deburring, and countersinking efficiently, reducing the need for multiple tools. · Multiple Size Options: Available in 10 sizes ranging from 3mm to 10mm (including 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, and 10mm), allowing you to select the perfect bit size for your specific project requirements. · Five Flutes Design: Features a five-flute configuration that reduces chip load and accelerates wood sawdust removal, ensuring smooth and rapid drilling on low hardness boards. · Ideal for Soft Materials: Perfectly suited for drilling holes in wood, plastic, and other soft materials, providing clean and precise results every time. · Easy Operation: Comes with an included hex key for quick and easy bit installation and adjustments. Specifications: · Drill Bit Material: Carbon Steel · Countersink Material: 45# Steel · Countersink Flutes: 5 · Drill Bit Diameters Available: 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm (options for sets include 3-10mm and 3-6mm) · Countersink Diameter: 15.8mm · Hex Key Size: 55 x 20mm Package Includes: · 1pc or 1 set x Combined Countersink Drill Bit · 1 x Hex Key Note: The 3-10mm set contains 7 pieces, while the 3-6mm set contains 4 pieces. This precision-engineered combined countersink and drill bit set offers exceptional versatility and efficiency, making it perfect for detailed work on soft materials such as wood and plastic. Its durable construction and thoughtful design ensure smooth operation, faster chip removal, and extended tool life for both professional craftsmen and DIY enthusiasts.