Rikon PROseries CBN Card

RIKON's PROseries double-sided credit-card size (~2-1/4" x 3-3/8") sharpening stone features CBN (Cubic Boron Nitride) abrasives, one of the hardest materials besides diamond! No water is required to put razor sharp edges on your hardened steel tools - knives, chisels, gouges, and other cutting blades.

Note: CBN abrasives are for sharpening hardened heat-treated steel only. Using soft carbon steel, aluminum or other soft metals will ruin the abrasives and void the warranty.