This package includes 2pcs 1/4" x 1/4" NPT Male Pipe Fitting Adapter. This 1/2" Barb x 1/2" NPT male pipe fitting connects hose to pipes, typically has a male-threaded end which mates with female threads. The other end of the fitting is a barbed tube, which is inserted into a hose. You could add an adjustable hose clamp to keep the hose from slipping off the barbed tube. The hose barb fittings are made of brass, Which is considered more durable for heavy-duty use.
WARNING - This product can expose you to chemicals including lead(~2.85%), which is known to the State of California to cause cancer and birth defects or other reproductive harm. They are not allowed by federal law to be installed for potable water use in the U.S.A. and its territories.