The antenna is manufactured in premium quality materials in order to prevent galvanic corrosion. Radiating elements are made of copper. The antenna is manufactured using crimping technology giving the antenna a 4-5 times stronger build-up. Fits both 1" 14TPI and ISO 228/1-G1threads. It has the same rugged design as all other AC Antennas products thus it withstands harsh environmental conditions, both on sea and land.