The Messermeister 3-in. Slim Edge-Guard is an ideal fit for garnishing knives 3-in. in length or less. The exact dimensions are 3.25-in. long by 0.5-in. wide. If your knives are not stored in a block or you carry them around in knife luggage, edge guards are a must for the knives you want to take care of. Not dishwasher safe.