Amzer AMZ93346 Boat Helm Tablet Mount New innovative, adjustable tablet holder fits any tablet 7 to 12-Inch with or without a case or Silicone or TPU skin. Can be mounted on posts and rails up to 33mm in diameter Swivel ball connection for 360 Degree rotation with tilt for portrait or landscape viewing. Adjustable arm allows various mounting positions. For use with boats and other apparatus with cylinder-shaped frames or posts. No Tools required easy install. Compatible with all 7 - 12 Inch Tablet and eBooks with or without Covering.