When storing your vehicle without the antenna mounted, this ABS polymer threaded cap protects your NMO mount from the elements.
.Rugged protection against rain, mud, debris, and physical damage, our NMO Cap is a must-have! Rugged protection against rain, mud, debris, and physical damage;ABS polymer threaded cap protects your NMO mount from the elements;Keeping your NMO mount rust and damage free is critical to communications performance;California Residents: WARNING Rugged Radios Antenna Coax Cable Cap for NMO Mounts - NMO-CAP Don't leave your race car parked without the NMO Cap! Keeping your NMO mount rust and damage free is critical to communications performance, and this cap is the answer.