IDEAL FOR A VARIETY OF KNIVES: Our electric knife sharpeners are suitable for different types of straight blade knives (chef's knife, fruit knife, chopping knife, etc.), serrated knives, ceramic knives, scissors (kitchen scissors, secateurs, axes, etc.). In addition, a removable ceramic polishing rod is attached for grinding tools with special shapes, which can also be used for polishing.Premium quality: 4 in 1 electric knife grinder with professional precision sharpening slot design, creates incomparably durable and sharp blade, brings you amazing knife sharpening effect. Blunt knives become as sharp as new knives after sharpeningEASY TO USE AND SAVE TIME AND EFFORT:With a single on/off switch, the 4 in 1 electric sharpening system is very convenient and fast. You just need to insert the knife into the slot and pull it in one direction. Simply sharpen on each slot 3-5 times to restore the sharpness of the knife.Practical design: there are 4 slots. 100% diamond grinding wheel in slot 1, slot 2 and slot 4, restores the sharpness of the blade, ceramic polishing rod in slot 3 for polishing. The rear cover of the slot 4 can be removed to grind other tools such as pruners or axes etc.