BrassCraft 3/8 in. O.D. Push in Union Connector

BrassCraft 3/8 in. Compression/Push x 3/8 in. Compression/Push Coupling Push Fitting is used to connect copper, PEX and other good quality plastic tubing. It is easy to use, so suitable for both DIYers and pros, alike. No tools or tube inserts are required. These can be used with both hot and cold water, air, vacuum and non-volatile liquids. Also, they have zero-leak connections.|Used to connect to copper, PEX and other good quality plastic tubing|Requires no tube inserts|Requires no tools|Can be used with hot and cold water, air, vacuum, and non-volatile liquids|Zero-leak connections|Rated for 150 psi at 70F and 60 psi at 140F