The NEW Antennas Direct STM-1000 40" Antenna J-Mount 100CM is a high-quality antenna designed for both indoor and outdoor use. With a size of 40 inches, this antenna is perfect for achieving a strong and clear signal for your TV and video needs. Built by Antennas Direct, a trusted brand in the industry, the STM-1000 model is sure to provide reliable performance for your home or business setup.