Zwilling JA Henckels Bob Kramer 400 Single Grit Whetstone
Made from synthetic ceramic whetstone, this Japanese sharpening stone #400 grit allows you to change the angle of the edge of the blade as well as repair it. The stone sharpens to your desired sharpness as well as creates a long-lasting sharpness through minimal work. It is safe to use on all knives except ceramic.