Trident Case Quick-Release Bike/Rail Strap - Retail Packaging - Black Quick-release bike/rail mount for mobile devices. Fits any cylindrical frame from 15-50mm in diameter. For use with bicycles, motorcycles, golf carts, ATVs, snowmobiles, wheelchairs, hang gliders, or other apparatus having cylinder-shaped frames or posts. Reusable zip tie closure and quick-release lever. 360 rotation for custom viewing positions. Reusable zip tie closure and quick-release lever. 360 rotation for custom viewing positions. Compatible with Trident Case Kraken A.M.S. phone and tablet cases only. Quick-release bike/rail mount for mobile devices. Fits any cylindrical frame from 15-50mm in diameter. For use with bicycles, motorcycles, golf carts, ATVs, snowmobiles, wheelchairs, hang gliders, or other apparatus having cylinder-shaped frames or posts. Reusable zip tie closure and quick-release lever. 360 rotation for custom viewing positions. Compatible with Trident Case Kraken A.M.S. phone and tablet cases only.