Double Nipple Application : Brass Finish and Chrome Plating Light / Medium / Heavy weight. Size / Size : 1/4″ x 1/4″. : 1/2″ x 1/2″. : 3/4″ x 3/4″. : 1″ x 1″ . : 1.1/4″ x 1.1/4″. : 1.1/2″ x 1.1/2″. : 2″ x 2″.