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 in. - 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.