Missus came home from shopping at ASDA and thought these might come in useful for my bikes, so I measured up a bottle and found each one measures 125ml, exactly the same amount for my pre- mix ratio at 40:1 which works out as 1x 125ml bottle to 5 litres of petrol or half a tank, which gets me roughly 50 miles per 5litres so 2 bottles would get a full tank, easy enough to store in pockets,rucksack, or tool bag somewhere
Theres a funnel, and two other small containers for screws or grease etc.
Looked for these. Couldn't find them in Asda nor Tesco. Looks like the old fashioned 125ML measure from a mixing bottle into two 250ML bottles. Will do for me, I guess.