6" Stone Holder for Professional Precision Adjust allows using any 6" sharpening stones including Venev Centaur and Venev Ursa Series dual-side diamonds, and any Edge Pro form-factor stones (with mounting).

Note. It's very important to keep a sharpening angle consistent. The angle should not change when progressing to a next stone. If the thickness changes, the sharpening angle changes. Unchecked, this can ruin your sharpening. Use a digital angle gauge to monitor the sharpening angle when you replace a stone in the stone holder. Use the angle adjustment knob of the sharpener if necessary.