TheWolf Tooth B-RAD Half Bottle Adapterallows you offset the bottle cage location to make your bottle more accessible, also to fit additional accessories like a pump, tool, tube, etc. Wolf Tooth B-RAD Half Bottle Adapter Features Easy to access bottles and out of the way of legs Easy to install using existing cage mounts on bike(B-RAD Base component required; sold separately) Use the DogBone base variant for curved downtube frames Great for trail, enduro, bike packing, XC, and town/commuting applications. The B-RAD Mini Strap and Accessory Mount were designed especially for the Half Bottle Adapter so it could be mounted to the side of the bottle. But you can customize to fit your needs ... More info