Buck Edge Tek Honing Stone Sharpener - 800 Grit Life time Warranty Built with precision and quality Variety of outdoor uses 100% crushed Quartz crystals-Novaculite, fine 800 grit Compact 1.625 x 4.375 inches 325 (Coarse) single side grit includes black nylon sheath Comes with Buck's Forever Warranty and is Made in the U.S.A.