Adjustable Side Loading Cage to fit bottles 2 1/4" to 4 3/4" and can be mounted as left or right handed. Keeps all sizes of bottles secure and great for tight spaces. - Easy as ABC: The ABC (Any Bottle Cage) by BiKASE is an innovative water bottle cage that can expand or contract as you need it, keeping your bottle secured and easy to reach - Easy to Install: Quick and simple to install and comes with 2 screws, which give it a firm hold when secured against the threaded holes on your bike's frame. Unique L-shaped adapter allows you to customize which side of your bike you can access your bottle from. - Easy to Use: Simply turn the knob to tighten or loosen the ABC from a small 2.25" to a wide 4.75", giving you enough range to keep any bottle or container - or even a small speaker - Ambidextrous: Bottom retainer allows you to customize which side of your bike you can access your bottle from. Patent Pending