Libra Supply 4 inch Copper Pressure Coupling with Dimpled Stop C x C, (click in for more size options), 4'', 4-inch Copper Pressure Pipe Fitting Plumbing Supply

For aboveground use Used to join straight lengths of types L and type M hard-temper copper tubing C x C copper to copper connection type Requires pressure to maintain water flow Fitting ID Size: 4-1/8'' (OD 4-1/4''), Fitted Pipe ID Size: 4'' (OD 4-1/8'')