WolfTooth B-Rad System Base 3-Slot
The B-RAD system begins with a series of slotted Mounting Bases. Available in three sizes, B-RAD bases can shift a bottle cage away from inconvenient rear shocks, add room for tools or tubes below a bottle cage, or even provide space for a second bottle on sufficiently-long downtubes.
Next you can mount various B-RAD accessories to your B-RAD base or bases. The B-RAD accessories improve or optimize bottle cage locations, add water/tool/spare parts capacity, and there are many more accessories coming in the future.