The Mustang Survival Inflatable Life Jacket Re-Arm Kit G contains everything necessary to re-arm your Mustang Survival Auto Hydrostatic inflatable PFD after deployment. Regular maintenance can reduce the possibility of inadvertent inflation.Note: Compatible with inflatable PFD model Khimera dual flotation PFD (model number MD7183).FeaturesOne 12 gram CO2 cylinder One green indicator pin