Designed for use with the GRS GraverHone VS and older Power Hone graver sharpening units. The Apex sharpening fixture features dual angle dials for adjusting both elevation and rotation angles for accurate, repeatable grinding of gravers. The rotation angle dial on the front of the fixture head is removable and can be substituted with one of the Speedline Dials—available separately (see related products below)—for even greater efficiency. The graver clamping mechanism is specially designed to work with GRS QC (Quick Change) tool holders (see related products below). Simply insert a QC graver with tool holder and turn the clamping dial 1/4 turn to secure. The fixture head slides smoothly along the vertical locating post for easy operation. The base of the fixture is precision ground and magnetized so that it stays exactly where you position it on the table of your hone. Made in USA.