Bully Dog 30706 Black GT Armor Protective Case Sleek cover will keep your bully dog GT looking brand new Made from durable UV resistant silicon which will protect your bully dog GT unit from small impacts Protect the USB, SD card slot, and HDMI from moisture (indirect spray) Gt armor must be mounted using the 2 1/16 gauge pod mount with t-slot (30420), ram suction cup mount (30600), mirror mate mount (31600) or (33600), and the universal mirror mount GT ARMOR - BLACK