The GS-800 VHF Antenna Mount was created specifically to prevent climbing on the boat gunnel to raise and lower a VHF antenna. Lift and descend the antenna from the safety of the deck from under the top. Its smooth operation, attractive machined aluminum frame and cast stainless-steel rotator make this item a must for any boater.Safe, no-hassle raising and lowering of a VHF antenna; No more climbing on T-tops or gunnels; Standard 1″-14 thread (male) shaft to accept standard VHF antennas; Machined / Anodized aluminum body; Light brushed finish; Polished Type-316L stainless steel crank handle; Folding crank handle locks flush into base; Threaded shaft for consistent lift and descent; Delrin bearings for smooth operation; Roller bearings in crank assembly; Mounts through up to 2″ thick hardtops; Includes 4″ x 1/4″ round backing plate (hardware not included); Made in the USA; 1-year limited warranty