Navitech dash air vent / vent mount ball and Back Plate Clip for the Garmin Nuvi 2500 Series 2515 2545 2515LT 2545LMT 2555LMT 2555LT 2585TV 2595LMT GPS Sat Nav Full Clip and Lock System to windscreen full ultimate hold (up to 7kg in weight) 361 degree strudy operational head to your Garmin A full 2 piece windscreen mount for your Garmin The ball joint is 17mm in diameter Fully under a 3 year warranty