Just sharpen and use. Eliminate tedious shaping—think of the time they’ll save you! Fit all GRS QC (quick-change) impact handpieces when mounted in GRS QC Holders. Also fit many other handpieces, including NgraveR, Magna-Graver, Foredom Power Graver and more. Ground from high-speed chrome tool steel to precision standards. Sold individually.  There are two different kits available, one for engravers (8559968) and one for stone setters (8559967).