Reducing Coupling, PVC, Schedule 40, For Pipe Schedule 40, 6 in, Female, Socket, 7 3/16 in, 4 in, Female, Socket, 5 in, Includes Seal No, For Pipe Outside Diameter 4 1/2 in, 6 5/8 in, 6 1/4 in Overall Length, Gravity Flow Maximum Operating Pressure,...