Crafted by Drillco Cutting Tools, this 3-piece HSS Multi-Step Reamer Set is an essential addition for any workshop or toolkit. Designed for precision, these high-speed steel reamers feature a spiral flute design that ensures efficient chip removal and smooth finishing. With a 3/8 inch shank size and a durable black oxide coating, this set not only enhances performance but also increases longevity, making it ideal for a variety of drilling applications. Manufactured in England, these fractional reamers are part of the 470S series, providing versatility and reliability for both professional and DIY projects.