A set of 4 long lasting High Speed Steel (HSS) replacement cutter for Sorby's versatile TurnMaster Tool. Includes one each of their specialty scraper cutter tips - the #4 French Curve, #5 Box / Dovetail, #6 Teardrop, and #7 Mushroom. HSS works well on all types of woods. They cut crisp details and leave a fine finish. Work with any of Sorby's handled or un-handled TurnMaster shanks. Cutters are re-sharpenable. England