Features a vacuum suction grip to secure the base to most kitchen work surfaces. Diamond coated wheel re-edges blunt knives & fine ceramic wheel hones your knives to keep them sharp. What’s the difference between honing & sharpening? Honing a blade gently straightens any microscopic kinks & bumps in the edge that occur during day-to-day use. Regular honing keeps a knife sharper for longer. If your knife no longer cuts with ease, or you want to bring an old favourite knife back to life, sharpening removes material from either side of the blade to recreate the original fine cutting edge.