These fuel bottles are designed specifically to accept the threads on MSR fuel pumps and to easily handle the high pressure you need to efficiently operate MSR liquid fuel stoves.
All these bottles come with MSR's child proof top.
NB MSR fuel bottles are unlined aluminium. They are fine for use with white gas, Coleman Fuel, petrol and paraffin (kerosene), but are not suitable for methylated spirits, which will turn them into a colander.