The fabric tool keg bottle is a handy way to carry your tools and other bits rater than stuffing your saddle bag or jersey pockets like the innovative cageless fabric water bottles the tool keg is also cageless which makes your bike look super clean simply screw in the two bolts supplied with the keg into your bottle boss mounts and then slide the keg over the bolts coming supplied with a neoprene bag its helps stop the rattling of tools and other items make your bike completely cageless an