Ridgid Tools 37950 Alloy 1/4-Inch Rh National Straight Mechanical Pipe Die MCF This product is used for

This product is used for coupling-nuts

They are made of brass

UNIV 1-2 NPT HS SS has a 1" - 2" NPT and 11-1/2 TPI

The socket has a 3/8" male National Pipe Taper (NPT) threaded connection on one end for connecting to a female hose fitting and a coupler connection on the other end

Ridgid Tools 37950 Alloy 1/4-Inch Rh National Straight Mechanical Pipe Die MCF This product is used forSince 1923, Ridgid has remained the symbol of certainty to dedicated professionals of the expert trades. Every tool that bears the Ridgid brand is engineered to the same high standards of quality, strength and endurance as was that first heavy duty pipe wrench more than 80 years ago. Ridgid covers its products with a lifetime warranty against defects in material or workmanship for the life of the tool. The Ridgid 37950 is a NPSM alloy right hand pipe