MTB Tube Spool

"MTB Tube SpoolThe MTB Tube Spool is a simple, compact system that'll carry everything you need to fix a flat without weighing you down. To do so, its design allows for a spare tube, with up to a 48mm valve stem, to be rolled-up without damaging the tube. Meanwhile, the Spool easily holds a lever, CO2 cartridge, and a valve head.Ingenious design allows the spare tube to be rolled up, while protecting valve stem from rubbing a hole through the rubber.CO2 valve head and two-sided tire lever snap into place for compact and secure storage.Holds a single threaded 25g CO2 cartridge.Fits up to 48mm long tube valve stems.Hook-and-loop strap can slide side to side to accommodate all different size mountain tubes."