Venev Ursa Series Dual Side Diamonds are used for sharpening knives on Hapstone and TSPROF guided knife sharpeners

slurry with garnets is released from the Coticule surface

CGSW uses high-quality diamond powder processed in the USA from foreign stock

Spyderco Ceramic scarcely wears over time

universal stone holders for professional precision adjust back-in-stock Venev Ursa Series Dual SideHapstone PlaneShift Series includes components of Hapstone RS (such as stone holders or clamp system) adopted for other sharpening systems: PPA, WSPA, KME, Wicked Edge. Universal Stone Holder for Work Sharp Professional Precision Adjust is equipped with a digital angle gauge holder and a stone changing pin. Universal Stone Holder allows using ANY rectangular sharpening stones: 6" Professional Precision Adjust diamonds and blanks 6" mounted stones