- Versatile 7-Piece Set: This comprehensive set includes step drill bits ranging from 4-12 mm to 4-32 mm, saw drill bits in sizes 3 mm, 6 mm, and 8 mm, plus one center drill bit. Perfect for creating holes in a variety of materials such as steel, brass, and plastic. - Multifunctional Use: Designed for drilling, reaming, and deburring, this cost-effective step structure features one spiral drill bit with 15 different specifications, making it suitable for various applications. - High-Quality Material: Crafted from premium high-speed steel, these bits are coated to minimize friction, ensuring durability and extended lifespan. - Practical Applications: Ideal for metalworking, woodworking, and DIY projects, this set allows you to easily drill precise holes in multiple materials. Use it for tasks such as installing hardware, creating pilot holes, or fabricating parts in your workshop. - Compatibility: The drill bits are compatible with standard drill chucks, making them easy to use with most power tools. - Size Variety: The range of sizes ensures you have the right tool for any job, from small precision holes to larger openings. - Enhanced Performance: The unique design of the step drill bits allows for smooth cutting and reduces the risk of bit breaking, providing a reliable solution for your drilling needs.