21' 10DB VHF ANTENNA MAST MNT 1-PC

For Use With VHF Marine Radio; Monopole; 18.5 Feet Length; 4 Inch Diameter Tube; 10 dB Gain; Mast Mount With Aluminum Sleeve; White; With Chrome Plated Brass Ferrule/ SO-239 UHF Female Connector And 483 Mast Bracket