HSS drill bits with Weldon shank in the long series are designed for drilling operations on metallic materials. The long series configuration allows for greater depths to be reached compared to standard drill bits, ensuring increased versatility in machining. The Weldon shank provides a stable and secure grip during use on machine tools, reducing the risk of slipping. Made of high-speed steel, these drill bits offer good wear resistance and maintain cutting efficiency even under demanding working conditions. They are suitable for professional applications requiring precision and reliability.