If, like me, you've bought yourself a cheep and cheerful nailgun and compressor and you know that it says in the instruction/guarantee speak that the nailgun requires at least three drops of airtool oil everytime you use it and you get fed up/forget to unscrew the airline to put those drops in, get yourself an in-line oiler from Axminster stock code: SA111 (On Gun Air Lubricator) or In-Line Oiler according to the Dr. :wink: Fill it and forget it, until it's empty that is