Libra Supply 2 x 1 inch(Nominal Size) Copper Coupling Bell Reducer, C x C, (click in for more size options), 2'' x 1'', 2 x 1-inch Copper Pressure Pipe Fitting Plumbing Supply Provides a reduced socket size for aboveground water supply piping Copper construction C x C copper to copper connection type Solder connection required Fitting ID Size: 2-1/8'' x 1-1/8'' (OD 2-1/4'' x 1-1/4''), Fitted Pipe ID Size: 2'' x 1" (OD 2-1/8'' x 1-1/8'')