The ProComm JBC200B is a 2-foot fiberglass CB antenna designed for reliable performance in CB radio communications. It is rated for up to 750 watts and features a durable 5/16 inch fiberglass core. The antenna uses a top-loaded 1/4 wave helically wound design with 20 gauge copper wire for efficient signal transmission. A chrome plated 3/8-24 threaded ferrule allows for secure mounting on standard CB antenna mounts. The frequency range covers 26.9 to 27.4 MHz and the antenna is factory tunable with field adjustability to fine-tune SWR. It comes in a black color for a clean, low-profile look.