General description Double Swiveling Base for Radio Antenna is designed to provide a sturdy and versatile mounting solution for radio antennas. This base allows antennas to swivel in four directions, ensuring optimal positioning for enhanced signal reception. Constructed from high-quality 316 grade stainless steel, it offers excellent protection against rust and corrosion, making it ideal for marine environments. Technical specifications Base Size: 63MM x 93MM Overall Height: 115MM Thread: 25MM Drill Hole Diameter: 7MM Material: 316 Grade Stainless Steel