The Wolf Tooth B-Rad 4-Slot Mounting Base clamps to your existing bottle cage mounts and enables you to run a wide range of configurations for bottle, accessory and equipment storage.Constructed from lightweight but highly durable 6061 T-6 aluminium, the B-Rad bases are sturdy, stalwart add-ons that unlock a raft of configurations for gravel, MTB and road adventures.Combined with any of Wolf Tooth\'s B-Rad straps, bags and accessories, you can build your perfect bikepacking setup.For installation instructions please refer to Wolf Tooth\'s handy guide