Onyx A/M 33 All Clear Inflatable Life Vest Re-Arm Kit - 33 GramThe Onyx 33 Inflatable Life Vest Re-Arm Kit are are designed for use with Onyx or Kent 33 life vests. The kit includes a 33 gram CO2 cylinder with a 1/2" thread and yellow water soluble bobbin.**Item contains a CO2 cylinder and may not be available to ship to Alaska or Hawaii