This is an omnidirectional dipole antenna. The antenna is for use with radio telephone, two-way business radio and many other UHF applications. This antenna is manufactured in premium quality materials in order to prevent galvanic corrosion. Radiating elements are made of brass. The swivel nut N240F is included for installation on 1 1/4" 11TPI mounts. The antenna is manufactured using crimping technology giving the antenna a 4-5 times stronger build-up. The antenna has the same rugged design as all other AC Antennas products thus it withstands harsh environmental conditions, both on Sea and Land.