The wolf tooth xl strap and accessory mount enables you to carry your kit on your frame instead of in jersey pockets. Rain jacket, tubes, tool roll – all good to go. Constructed from sturdy and reliable materials, this is a remarkable exercise in innovative design.simply attach the base plate to one of the wolf tooth b rad mounts – purchased separately – and securely strap items up to 12cm in diameter to your frame. Simple, efficient and durable, the strap and accessory mount are ideally suited to gravel, trail and road adventures.key features lightweight, durable, rust proof materials includes the mounting plate, strap and associated ed coated hardware extremely grippy and flexible strap with reflective tab and foam pad compatibilityrequires a b rad base to mount to your bike compatible with any frame that uses standard 64mm spacing bottle cage braze on securely straps items 75 120mm in diameter