Specam Two Stages Kitchen Knife Household Sharpener Tools Unique sharpening wheel design make it so easy to use, just pull back and forth; Suitable for all knife with fine edge, not suitable for serrated edge Do not put sharpener in dishwasher, or submerge in water, put beyond the reach of children to avoid any accident Non slip rubber bottom and ergonomically designed handle is comfortable to hold and secure stainless steel plate with EVA non-slip base to ensure sharpener security