The Cerwin-Vega CVPOLE-1A is a telescoping reinforced steel speaker support pole that holds up to 150lbs. It includes a twist lock and a secure locking-pin for height adjustments. It is designed to be used with the CVA Active/Passive Series speakers. Use the CVPOLE-1A with the CVANT-2A and the CVANT-3A Speaker Support Systems. This speaker pole is compatible with all industry standard 35mm pole cups.