The Twin tube can be mounted using bottle cage fixings keeping tools on hand for when needed. With two chambers, one holding the SOS multi tool and the second for storing CO2 or spare chain links. SOS Multi toolcrankbrothers' versatile take on the multi-tool can be used similar to a T-handle, in-line screwdriver, or a typical set of L-key tools.Gain a bit of extra leverage by extending the tool with the alloy Tool Tube or leaving it attached to the CO2 Chain Breaker.Store a spare chain link with the magnetic holder.S.O.S. CO2 Chain Breaker This tool helps with tyre inflation, loose tire valves and spokes. Attaching the tire lever serves as a sturdy handle when repairing chains.Proper Tyre Tools Capable tyre levers and tyre plugs ensure youll have the tools needed.Key Features:2, 2.5, 3, 4, 5, 6, 8mm hexT25 torx toolFlat screwdriverTyre plug tool + 2x plugsTyre leverChain toolSpoke wrenches 0, 1, 2Valve core toolCO2 headStorage tube247gFits a spare chain link + 16/20g CO2,sold separate