GSA.8821 I-Bar Penta-band Cellular Antenna is flexible and robust. The slim-line design is ideal for covert and convenient installation in automotive vehicles. Its omnidirectional gain across all bands ensures constant reception and transmission. This dipole antenna is designed to be mounted on glass or plastic (not on metal). The GSA.8821 is first tier automotive approved and the part GSA.8821.A301721 (with Fakra Code D connectors) is listed in the global automotive IMDS databases, it has gone through full PPAP design, reliability and quality audits, including audits at the production facility. Cables and connectors are fully customizable. It comes with strong 3M double-sided adhesive for a permanent and secure fix to your vehicle interior.