Zip up

My friends asked me to a quick servicing of their Zippos, theirs being the central and left lighter, pulling their wicks through, cleaning flint wheels a little etc. couldnt resist taking a photo of the three of them, this was originally just a picture to test the light and focus, I then re-arranged and lit them, forgetting to adjust my focus... heres a link to the blurry photo anyway.
Note: I guess they just don't make them like they used to, the oldest of the three boasting a beastly flame :P