Need help with diffuser size

Discussion in 'Bongs, Dab Rigs, Bubblers, Water Pipes' started by mr.smokealotapot, Feb 12, 2014.

  1. im sure this gets asked a lot but I need to know what size diffuser I need to get ill be ordering off of aqualabtech, all their sliders say like 14/18mm, /14/14, I was also wondering what the first number n second meant so I know, now I did the "dime test" and I can fit a dime into the opening but it wont fully fall through so does that means it 18mm? I have a picture showing  measurement of the opening, thanks for the help


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