ZOMCHAIN Marine VHF Antenna Mounts, Ratchet Mount, 316 Stainless Steel Adjustable Base Mount for Boat

Amazon.com Price: $38.99 (as of 23/05/2022 18:30 PST- Details)

✔ Size: Base measures 3 9/16″ x 2 1/2″ , 0.87″ – 10 thread male, 3/8″ hole for cable pass through, Hole diameter 5/16″
✔ 316 Stainless steel: Marine grade 316 stainless steel, rust-proof, Excellent seawater corrosion-resistant and durable. Highly polished to a beautiful mirror-like finish
✔ Packaging: There are two kinds of screw fittings for your choice, one is the bolt, the other is the screw (All accessories are made of 316 stainless steel)