Wolf Tooth B-RAD Double Bottle Cage AdaptorWolf Tooth B RAD Double Bottle Cage Adaptor. B RAD Bottle Mounts allow for cargo customization and cargo optimization. They are designed to work in tandem with B RAD Base mounts to keep cargo on the bike and off the back. Compatible with any bike frame that has 2 standard 64mm spacing bottle cage mounts (most modern frames) 6061 T6 aluminum brackets stainless hardware Weight (no hardware) 20g Maximum load 1700g TECH SPECS Defined Color Black