TheWolf Tooth B-RAD Double Bottle Adapteris part of theB-RAD™system that allows you to fit 2 bottle cages side-by-side. This allows for easy access to bottles, out of the way of your legs. Wolf Tooth B-RAD Double Bottle Adapter Features Easy to install using existing cage mounts on a bike B-RAD Base component is required; sold separately 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) Wolf Tooth B-RAD Double Bottle Adapter Specifications Material: 6061-T6 aluminum brackets Weight: 20g Maximum load: 1700g Torque: 3-4 Nm Made in the USA