Popular in the 14th Century, it was a personal fighting knife/dagger. Used by civilians and military personnel, the Rondel was around 12 inches long. With the grip, the length would actually reach 20 inches. Named for the rounded end above the grip, the blades were often single edged. Double edged version have been seen as well. Often. the Rondel's tip was "chipped" or had one blade point side cut lower than the other (curved). The Rondel was extremely effective as a punching/ thrusting weapon. It would be used to exploit the space between armor plates, helmet visors or even in some cases, chain mail. Descriptions from the Era also tell of a "4 edged" version. This device was probably used more as a utility tool than a combat weapon.