Bobbins are a replacement part for all Halkey Roberts type automatic inflators. They dissolve when immersed in water and cause the CO2 cylinder to inflate the PFD. All Mustang automatic inflatable PFDs come with cylinders and bobbins.
Mustang Survival recommends annual maintenance and inspection of your PFD. For recreational use, bobbins should be replaced every three (3) years to avoid inadvertent inflation.
*Sold as a Pack of 12
WARNING: This product can expose you to chemicals including ANTIMONY OXIDE (ANTIMONY TRIOXIDE),N,N-Dimethylformamide which are known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.