Sorby TurnMaster Excelsior Cutters , 2, & 3 are a set of durable and extra-long lasting titanium nitride (TiN) coated cutters designed specifically for the versatile Robert Sorby TurnMaster Tool. This set includes one each of the primary cutters: the Round, #2 Detail Point, and #3 Square, all engineered to deliver crisp detail and a fine finish. The titanium nitride coating enhances the cutters with a hardness rating of Rc 90, providing toughness and significantly prolonged edge life d to plain high-speed steel (HSS). These cutters are compatible with any of Sorby's handled or un-handled TurnMaster shanks and can be resharpened for extended use. Made in England, these cutters excellent performance for woodturning enthusiasts seeking precision and durability. Model Number: RSTM-GT123