1/4 MNPT Brass hose fittings are used to assemble new hoses or replace old fittings on hoses. A hose clamp may also be used but is not as desirable. For best results and professional finished product the hose end should be secured with a crimped ferrule. Product Features:1/4 hose inside diameter1/4 Male national pipe threadFeatures a barb type construction that provides a secure grip on the hose inside diameter