To be packaged as a unit of 2 pieces. The couplers are to face in opposite directions and are to be secured with two 1.25″ non-metallic bands around the shanks. Two 1.25″ non-metallic bands are to be placed at the ends and into the couplers’ key slots. A total of 4 non-metallic bands are to be used. Other sizes included are 1A and 1B.