The Messermeister 9-in. Chef’s Edge-Guard is an ideal fit for chef’s knives or wide blade knives 9-in. in length or less. The exact dimensions are 9.5-in. long by 1.9375-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.