The Flow Storage Adapter is an integrated stainless steel storage bracket that fits under a bicycle water bottle cage. It includes a Twin Speed Drive CO2 head, V Pro 5 multi-tool, two matrix levers, and two 20g CO2 cartridges*. Also available without CO2 cartridges. Not available with CO2 cartridges in all countries. SPECS COLORS: WEIGHT: 95g /311g Loaded REVIEWS/MEDIA 12.19.2019 - 44 Well-Designed Gifts for Cycling Enthusiasts ? Popular Mechanics "One of the keys to an enjoyable ride is to get as much stuff off of your body as possible and use the bike as your backpack. Lezyne’s Flow Storage is an ingenious way to turn the underside of your water bottle cage into a trunk. The storage bracket fits below the cage, providing a space for a small multi-tool, tire levers, two C02 cartridges, and a C02 head. It’s everything you need for quick repairs, no pack or overstuffed jersey pocket necessary." Read More MANUALS: FLOW STORAGE ADAPTER Manual