These measure 19 inches

This set of (10) Garmin factory antennas is compatible with T-5, TT-10, and TT-15 collars as well as Astro and Alpha 100 200i mini collars. These antennas are designed for hunters who require extended range cable antenna for their tracking system. Manufactured in the United States, they are of superior quality and ensure reliable performance in any hunting terrain. Perfect for hunting dogs, these antennas are a must-have for serious hunters.