The Cobia Ruler by Release Ruler is the perfect accessory to bring along when targeting the elusive Cobia. Each ruler is clearly marked with the current regulations and bag limit in a user friendly format. The Cobia ruler measures 2 x 40 inches and is made from durable weather resistant PVC material. The vinyl ruler is easily stowed, can be moved from boat to boat, or taken on a trip. Our promise to you is you will not find a better fish ruler on the market today. 100% Satisfaction Guaranteed.