Versatile Use and : Ideal for creating precise holes in stainless steel, iron, and other metals, these bits are essential for DIY enthusiasts and professionals in metalworking. The hex shank design ensures compatibility with standard drills and prevents slippage. Material: Crafted from high-speed steel (HSS) with M35 cobalt and a TiAIN coating, these step drill bits are designed for durability and efficiency. Certification and Safety: Although not currently holding specific certifications, these drill bits meet rigorous safety and performance standards set by the industry. They are crafted without the use of high-concern chemicals, ensuring safety during prolonged use. Design: The spiral groove and three flutes configuration enhance chip removal, reducing friction and heat. Efficient Drilling Capacity: Ranging from 3mm to 13mm, these step drill bits allow for a variety of hole sizes with seamless transitions, making them perfect for various projects and applications in metalworking., Weight: 0.07054792384 pounds, Manufacturer: Feyoalix