GSA.8821 I-Bar Penta-band Cellular Antenna is flexible and robust. The slim-line designed for covert and convenient installation in automotive vehicles. Its omni-directional gain across all bands ensures constant reception and transmission. This dipole antenna is designed to be mounted on glass or plastic (not on metal). Cables and connectors are fully customizable. It comes with strong 3M double-sided adhesive for a permanent and secure fix to your vehicle interior.