2 Wire holders, The 2-Conductor Universal Extension Arm (2-1/2″ x 6′) is designed for use on both composite and wood crossarms (3-3/4″ x 4-3/4″ max) for voltages up to and including 15kV phase-to-phase and up to 34kV phase-to-phase by using the M48057 Insulators on each wire holder. The Extension Arm is suspended under the crossarm by brackets to enable to conductor to be removed from the original crossarm and placed in the wire holder mounted on the Universal Extension Arm.