Adjustable Antenna Base - Die Cast Zinc Chrome PlatedThis Adjustable Antenna Base features dual swiveling mounts for full adjustability and a ratchet-style handle for side or deck mounting. Designed with an integral feed system for Loran cable. Accepts any standard antenna with 1"-14 threads. Constructed of chrome-plated die-cast zinc with mirror finish. Installs with four 1/4" fasteners (not included). Recommended for freshwater use.Specifications:Fastener: 1/4" FH