Wiltshire StaySharp Knife Starter Set - Stainless steel Self-Sharpening Utility and Santoku Knife Set, stainless steel, 15 year guarantee Design features include: a sharp fine edge blade, high quality stainless steel, a scabbard that sharpens and hones the knife each time it is remove advanced locking systemensures the knife is securely held in place ergonomic contoured handle that is comfortable to use