ChargerCity XT Boat Helm Spin Bike Tablet Mount with Universal Tablet Cradle Holder for Apple iPad Pro, iPad Air, iPad Mini, Samsung Galaxy Tab S, Surface Pro Book & All Other 7"-12" Screen Tablets ChargerCity's Universal Tablet iPad Mount for Boat Helm. Tablets features an innovative holder that adjusts to fit any 7" - 12" tablet and a 4" arm. The mount base fits rails and posts up to 33mm diameter. Innovative, adjustable holder fits any tablet 7"-12" with or without a case or skin. Can be mounted on bars, posts and rails up to 1.70 inches / 43mm in diameter. Secure Screw in for hard installiation use with bicycles, Bike, golf carts, boats, ATVs, snowmobiles, wheelchairs, hang gliders, or other apparatus having cylinder-shaped frames or posts. 360 rotation for positioning in portrait or landscape view. For iPad Pro 12" tablet please slide in the 4 longer hooks first then expand the strong spring loaded holder to slide in your tablet in landscape position first. Once locked in to holder, you can then rotate adjust the tablet into portrait position. (Please check the images on left)