Knife sharpening with whetstones is a centuries old craftsmanship. The SLIDER brings this skill into the home kitchen. Expensive and valuable knives can be sharpened at an angle of 14 degrees by left or right handed users without any problems and the blades cannot be scratched. Our top priority was to design an ergonomic innovative tool which is both, simple to use and highly functional. The high-quality stainless steel body made in Solingen, the food-safe silicone and the abrasion-proof ceramic inserts combine, to create a precise and effective working unit.