Pack a punch with seriously impressive GMRS two-way radio communication. The Highland��� is 28.5 inches in overall height, mounts on a �� inch hole, and is built with durable fiberglass strong enough to tackle the toughest trails. This heavy-duty antenna will bring reliable communication to adventures in cities, dense forests, and mountains with heavy obstructions. Frequency Range: 462.5500 - 467.7250 MHz