The SS350B adjustable subwoofer pole with retractable M20 thread & 35MM (1-3/8") adaptor pack includes two subwoofer poles and a carrying bag. Designed to support a variety of subwoofers and speakers, providing flexibility and stability for different configurations and setups. Catering to various environments, this speaker stand adjusts from 35" to 56" with a secure power lock lever mechanism to ensure safety. The adaptability and reliability of this stand make it ideal for touring musicians.