What is the joint size of this?

Discussion in 'Bongs, Dab Rigs, Bubblers, Water Pipes' started by Smokeitall420, Apr 10, 2016.

  1. I'm getting a new male nail head for my bong to make it into a rig, I need help to see what mm size it is , thank you!

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  2. it looks like a 14mm, either way most domeless nails these days are universal.

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