The DMT 6" Diamond Whetstone is the perfect tool for keeping knives and tools razor sharp. The whetstone measures 6" long by 2" wide and 3/4" thick. Plenty of room to sharpen fullsize blades but not take up too much room on a bench. The DMT Diamond Whetstone comes in a durable plastic case with non-skid rubber feet to keep it in place when in use.