The AnySharp Knife Sharpener in blue will safely and precisely sharpen almost any type of knife including hardened and serrated ones. Featuring a malleable suction cup which attaches to any flat surface worktop or wall the AnySharp uses hardened tungsten carbide tools at the perfect angle to give better sharper results than steel or a stone with no skill required. - L.M. Features: AnySharp Knife Sharpener Safely and precisely sharpens any type of knife Can even be used on hardened or serrated ones Malleable suction cup attaches to any flat surface worktop or wall Uses hardened tungsten carbide tools at the perfect angle to give better sharper results than steel or a stone No skill required