59873 Loc-Line 3/8" SAE Flare Nut Adapter for 1/2" ID System, pack of 20

Loc-Line 3/8" SAE Flare Nut Adapter for 1/2" ID System, pack of 20.
Flare nut fittings allow users to replace flared copper tube fittings and copper tube with Loc-Line fittings and hose.
3/8" Flare nuts fit to 5/8 - 18 threads.