Re-Arm Kit D 24g Auto & ManualThe Auto/Manual 24G Bayonet Inflatable Re-Arm Kit contains everything necessary to re-arm your Mustang Survival MIT 100 manual and automatic inflatable PFDs after deployment. The automatic inflator bobbin on all automatic PFDs should be replaced on a regular basis. Use only Mustang Survival re-arm kits. Use of other re-arm kits may result in improper operation or failure to operate and will void the product's warranty.Re-Arm Kit Contains:One 24 gram CO2 cylinders and bayonet assembly One bobbin (used for automatic PFD models only) One re-arming instruction manual  For model numbers: MD2014, MD2015, MD2016, MD2017, and versions CM and T1.