Product Description Threaded Polypropylene Reducing Bush Male /Female ( 1st Measurement is the Male Size) 17 sizes available. 1/2″ – 1/4″ 3/4″ – 1/2″ 1″ – 1/2″, 1″ -3/4″ 1 1/4″ – 3/4″, 1 1/4″ – 1″ 1 1/2″ – 1/2″, 1 1/2″ – 3/4″, 1 1/2″ -1″, 1 1/2″ – 1 1/4″ 2″ x 1/2″, 2″ x 3/4″, 2″ x 1″, 2″ x 1/4″, 2″ x 1 1/2″ 3″ x 2″