All Chef's Choice® sharpeners use 100% diamond abrasives. Diamonds are the hardest known material and will sharpen any knife regardless of alloy. Diamonds are tough and durable and diamonds will never detemper a edge.
·Incredibly sharp Trizor® edge - tip to bolster
·Three-stage 100% diamond abrasive sharpener - for edges that stay sharp longer
·Patented BiLevel® magnetic guides for easy, foolproof sharpening
·Excellent for kitchen, household, sports and pocket knives