This TT-39 Adapter is produced specifically for accessories requiring a 17mm ball such as the series of Garmin Nuvi GPS units (any model). This Adapter requires a mount, whether vehicle specific or universal, to be properally installed. This Adapter attaches directly to a VMS, VSM Legend, or VSM G3 style mount in addition to any of the universal mounts from Pro.Fit International. It is best to preassemble all parts with Garmin Nuvi GPS in order to comfirm the mounting location and fuctionally once mounted in the vehicle.
Included: TT-39 17mm Ball Adapter Plate, 4 Screws and 4 Nuts