1/4" barbs will fit size 1/4" ID tubing and smaller, typically 3/16" to 1/4".
If you choose the flare option, you may wish to purchase Flare Fittings of the appropriate size here.
1/4" barbs will fit size 1/4" ID tubing and smaller, typically 3/16" to 1/4".
If you choose the flare option, you may wish to purchase Flare Fittings of the appropriate size here.