50 PCS per box.
Fitting Size & Connections: 1/2" PEX × 1/2" FIP Swivel Adapt.
It is a plumbing transition piece featuring a 1/2-inch PEX barb on one end and a 1/2-inch Female Iron Pipe (FIP) threaded swivel joint on the other.
These are leaf free brass.
Has rubber seal on the barbed pex end.
See photos.