Fits 16/20/25g CO2 gas canisters or KLIC HV mini pumps. S.O.S. (SAVE OUR SHRED) series is a smart system that allows you to utilize the bottle cage mount to carry small items such as tools and spare tubes for rides. The TS18 TUBE STASH KIT integrates a variety of tools to handle troubles while riding and a mount to mount aluminum tool tubes, mini pump or CO2 cartridges into the bottle cage. The bottle cage is a Velcro type that allows you to attach not only bottles, but also spare tubes. Insert the mini tool into the tool tube to make it easier to apply force. Mini tool holds spare chain links Chain tool integrates with CO2 inflator. Doubles as a valve core tool and spoke wrench. When in use, you can install the tire lever for efficient work.