This part is a 3/4" Barb Adapter x 3/4" Slip / 1" Street.
The Glue Side glues inside a 1" Fitting (like a coupler) and the inside would accept a 3/4" Pipe flex or hard that would measure 1" outside diameter.
This part is a 3/4" Barb Adapter x 3/4" Slip / 1" Street.
The Glue Side glues inside a 1" Fitting (like a coupler) and the inside would accept a 3/4" Pipe flex or hard that would measure 1" outside diameter.