Release cartridge from Besto for automatic lifejackets with UML MK5, United Moulders All-Weather release system, e.g. for automatic lifejackets from Plastimo, Besto, Marinepool, Spinlock, Baltic, Compass. The set contains the release cartridge. At least one complete maintenance set (incl. cartridge and gas canister) should always be carried on board to make released life jackets ready for use again on a cruise!