The Woodruff HS 406 STR is a high-quality woodruff cutter designed for precision machining. With a size of 406, this tool is ideal for creating keyways in various materials. Made from durable high-speed steel (HSS), it ensures longevity and performance. The cutter features a standard size that fits most milling machines, making it versatile for different applications. Its design allows for efficient chip removal, enhancing productivity. This tool is perfect for both professional machinists and hobbyists looking for reliable cutting solutions.