Unique Cam Lock Design: The Gator Frameworks ID series subwoofer pole features the unique frameworks locking cam design. The cam allows the user to securely lock the speaker into place at the preferred height. When released, the cam works in conjunction with the Lift-EEZ piston to assist with lifting or lowering the speaker to the desired position. The Lift-EEZ piston can assist with lifting speakers up to 60 lbs. The Frameworks subwoofer pole allows the mounted speaker height to be adjusted from 37-inch to 57-inch (measured from the bottom of the mounted speaker depending on attachment depth). The stylish look of the ID series, the innovative functionality, and the durability make the Gator Frameworks ID series subwoofer pole the preferred choice for musicians, performers, live sound engineers, and more! Integrated M20 Threaded Mount Included:The Gator Frameworks ID series subwoofer speaker pole features an integrated threaded M20 mount. Simply unscrew the traditional subwoofer pole mount to expose the M20 threaded sub attachment. The threaded M20 mount is designed to work with JBL VRX915S, VRX918S, SRX718S, PRX615S-XLF, PRX718XLF, PRX400, PRX600, PRX700, STX800, VRX900 and QSC KW181, KSUB, and KLA181 subwoofers as well as other subwoofers that use the M20 threaded subwoofer pole mount.