This strong & safe fuel bottle has been designed to work exclusively with the threads on MSR fuel pumps, it is compatible with the following MSR liquid fuel stoves: MSR XGK-EX MSR Whisperlite MSR Whisperlite International MSR Whisperlite Universal MSR Draginfly All sizes of bottle feature a child safety cap. These fuel bottles have been designed to carry fuel & act as a fuel tank for your stove & are not suitable for storing fuel for long periods. It is recommended to decant any unused fuel into its original container.