Grand Slam 860 Electric VHF Antenna MountThe Grand Slam 850 Electric VHF Antenna Mount! Designed with safety and innovation in mind, boaters can adjust the position of their VHF antenna with the simple push of a button from the comfort of their helm. The GS-850 is a fully electric unit with hidden wires inside the hardtop. This mount easily installs to the surface of the hardtop and fits all top thicknesses. Features: Standard 1"-14 thread (male) shaft to accept standard VHF antennas up to 8&'; No under-mount clearance required Machined / Anodized aluminum body with a light brushed finish Threaded shaft for consistent lift and descent Brass bearings for smooth operation Features breakaway pin for manual operation Includes 6" lead of 20-gauge wire from the base 12-volt DC power supply for lift and descent Accepts 3A fuse in the main +12 VDC power feed (not included) Pairs with Backing Plate (BP-0850AEY), which is sold separately Pairs with 6deg Wedge Plate (WP-850-950), which is sold separately Sold individually Made in the USA 1-year limited warranty