Secure most fish finders and sonar/GPS up to 16" to most casting decks. Designed to mount over flush mounted trolling motor foot control pedals to more freely operate the pedal and free up deck space for rod tails. Features a 22.5 degree angled plate. Ideal for decks with less space forward of the pedal allowing for increased aft foot clearance over the pedal. Fits most major brands of Covers most flush mounted pedals. Powder coated marine grade aluminum construction. Internal: 14.1".