NUT - TUBING SIZE: 1/2" ID
Model #: QFN3
Flare nuts for 1/4" ID & 3/8" ID tubing both fit 1/2" thread size fittings. Flare nuts for 1/2" ID tubing fit 3/4" thread size fittings. Flare nuts for 3/4" ID tubing fit 1" thread size fittings. Sold each.