B-RAD Double Bottle AdapterDouble Bottle Adapter is part of the B RAD system that allows you to fit 2 bottle cages side by side. Easy to access bottles and out of the way of legs Easy to install using existing cage mounts on a bike B RAD Base component is required; sold separately Compatibility Requires use of a B RAD mounting base Compatible with any bike frame that has 2 standard 64mm spacing bottle cage mounts (most modern frames) Hardware included is T25 Torx head Related