💪 Size: Base measures 1" - 1.2" thread male, suitable for 1" rail | 💪316 stainless steel: Marine grade 316 stainless steel is anti-rust, has excellent seawater corrosion resistance and durability, is highly polished, and achieves a beautiful mirror effect. | 💪Ratchet action designed for quick and easy installation on Universal vertical or horizontal rails, The antenna pedestal has two adjustable ratchets. The upper ratchet has an adjustable angle of 270 degrees and the lower ratchet has an adjustable angle of 180 degrees | 🔧Fast installation and disassembly, can quickly unfold and recycle your antenna | 🔧If you have any issues or you think everything is not as advertised, please feel free to contact us. 24-Hour Customer Supports.