Features Stainless Steel Material: The boat antenna base made of stainless steel 316 material, It will not rust or corrode in salt environment, and is resistant to corrosive media such as air, water, steam, etc, corrosion-resistant, non-rusting and durable. Smooth and Beautiful: The boat antenna base after fine polishing, ensure permanent brightness to the greatest extent, without corrosion the jaw slider is more smooth and beautiful. However, pay attention to frequent scrubbing to avoid the influence of external factors. Long Service Life: The boat antenna base use good workmanship, high hardness, not easy to deform. Anti aging anti-collision cap with longer service life. Easy to Install and Remove: Standard processing. When the handle is vertical, the upper ratchet can be adjusted, and the angle can be adjusted by 270 degrees. Once the desired angle has been determined, pull the handle down to secure it in place, loosen the screw on the lower ratchet, and then adjust it to the desired angle. Adaptability: The antenna base dual rotating ratchet design, the marine VHF antenna support has two adjustable ratchets, which can easily adjust the installation on the inclined or horizontal surface, is suitable for boat, applicable to seawater area, yacht and ship. Specification:Item Type: Boat Antenna BaseMaterial: Stainless steel 316 Base Diameter: Approx. 66mm / 2.6in Inner Diameter: Approx. 22mm / 0.9in Hole Distance: Approx. 44mm / 1.7in Diameter: Approx. 28mm / 1.1in Height: Approx. 88mm / 3.5in Package List:1 x Antenna Base Package List 1 x Antenna Base