The 3PCS Premium HSS & M35 Cobalt Spiral Step Drill Bit Set is a high-quality drill bit set designed for DIY enthusiasts and professionals. It includes three different sizes of spiral step drill bits suitable for a variety of materials. These step drills are made from M35 high-speed steel with 5% cobalt content and feature a TiAlN coating on the surface, ensuring exceptional durability and cutting performance. The Multi-Step Drill Bits in this set are designed with efficient drilling in mind. The 118° X-shaped opening design and spiral flutes ensure smooth, clean drilling while improving chip removal efficiency and reducing resistance during drilling. This design not only enhances drilling accuracy but also minimises time wasted from frequent drill bit changes. Whether for home repairs, automotive and motorcycle maintenance, or construction and renovation projects, these metal drill bits can handle the task with ease. They are not only suitable for drilling but also for reaming, deburring, and chamfering, offering multi-functional use and significantly improving work efficiency. When using them, simply select the appropriate drill bit size based on project requirements, install it securely into the drilling tool, and ensure it is firmly in place. During drilling, it is recommended to use coolant or water spray to prevent the drill bit from overheating and damage, thereby extending its service life

• 118°X TYPE OPENINGS DESIGN - Designed with a spiral flute for smooth, clean drilling and enhanced chip removal. Achieve precise holes effortlessly, reducing the need for multiple drill bits
• IDEAL FOR DIY & PROFESSIONAL USE - Whether you’re a DIY enthusiast or a professional, this step drill bit set is perfect for various applications, including drilling in sheet metal, aluminium, copper, wood, plastic, and more. Not only can it enlarge holes, but it also deburrs, chamfers, and cutting
• COMPATIBLE WITH VARIOUS DRILLS - 1/4"(6.35mm) Hex shank design eliminate slipping in drill chuck, these step drill bits are compatible with a range of drilling tools including bench drills press, impact drills, and hand drills, making them a versatile addition to your toolkit
• KIND TIPS - To prevent overheating and potential damage to the drill bits, always use cutting oil or spraying water during operation. Proper cooling extends the life and efficiency of the bits

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