The tool tube is an effective way to create storage on your bike where there previously wasn't any available. This is the bike specific version where it has been made to fit the side carrier for the model mentioned. The tool tube is a black plastic storage compartment with a lid that screws on and off to keep your belongings waterproof. This tube measures 32x9cm on the outside and 29x8cm on the inside. The capacity is 1.5 liters which can be used for anything that fits such as a safety vest or road flares.