Cirro 16 Re-Arming KitThe RK-16 Re-Arm Kit, with a 16-gram CO2 cylinder, is compatible with all Bluestorm® Cirro 16 manual belt packs. The Bluestorm® RK-16 contains all the parts you need to easily re-arm your life jacket and get back on the water quickly. All Bluestorm® inflatable life jackets feature an internal pocket to store a spare cylinder, just in case you need it. So remember to pick up an extra kit for your life jacket.Includes:16-gram CO2 cylinder with 3\/8” threadHalkey-Roberts Green Indicator ClipRearming instructions