The Do it Best 1-1/2 In. x 1-1/4 In. White Plastic Reducer Coupling allows for an 1-1/2 In. or 1-1/4 In. slip joint inlet connection and an 1-1/4 In. solvent weld outlet connection, for a secure, leak-free installation. This Reducer Coupling includes all necessary nuts and washers including (1) 1-1/2 In. Washer and (1) 1-1/2 In. x 1-1/4 In. Reducer Washer. Constructed of durable white PVC material to match existing fixtures.