The compact Glomex Marine 20.9 FM Antenna delivers powerful performance for boats that need a short overall length. Simple to install anywhere with either a ratchet mount base or L bracket. Flexible steel is built with a helical design so it wont whip excessively in the wind. Includes 20 ft. of RG-62 coax cable. Available: Ratchet Base, L Bracket (not shown). Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Antennas.