Trident Case Bike/Rail Mount - Retail Packaging - Black Arkons Bike/Rail Mount for Kraken A.M.S. phone cases allows you to mount your mobile device to a bicycle, motorcycle, wheelchair, or other apparatus with a cylinder-shaped frame or post. Bike/rail mount for mobile devices. Fits any cylindrical frame up to 33mm in diameter. Mounting screws tighten for secure fit on bar or rail. 360 rotation for custom viewing positions. Compatible with Trident Case Kraken A.M.S. phone cases only. Arkon's Bike/Rail Mount for Kraken A.M.S. phone cases allows you to mount your mobile device to a bicycle, motorcycle, wheelchair, or other apparatus with a cylinder-shaped frame or post. Bike/rail mount for mobile devices. Fits any cylindrical frame up to 33mm in diameter. Mounting screws tighten for secure fit on bar or rail. 360 rotation for custom viewing positions. Compatible with Trident Case Kraken A.M.S. phone cases only.