Sorby Excelsior External Scraper Cutter is a high-performance tool designed for the connoisseur wood turner and those who frequently work with hard woods. This cutter features a square tip made from high-speed steel enhanced with a durable Titanium Nitride (TiN) coating, which significantly improves its edge-holding ability. The TiN coating not only extends the tool's longevity, outperforming even tungsten carbide in wear resistance, but also reduces friction when cutting, making it i for working with tough, abrasive woods and knotted burrs. The cutter can be repositioned multiple times on the tool before needing to be sharpened, which is easily done by honing the top face. With a 5/8" diameter and a Rockwell hardness equivalent of 80, this tool combines durability and ease of sharpening to help you spend more time turning and less time maintaining your tools. Made in England, the Sorby Excelsior External Scraper Cutter is a reliable choice for precision external shear scraping of vessels. Model Number: B827GC