The Sound Town STSD-M20B-PAIR includes two STSD-M20B poles. The STSD-M20B is a sturdy subwoofer / speaker extended pole, which is designed to fit the 1 3/8” (35mm) pole mounts as well as M20 threading. It comes with rugged and sturdy steel construction and make your PA system setup a breeze. This subwoofer/speaker extended pole is optimized for the Sound Town CARME series subwoofers and PA speakers and is also compatible with any speakers that come with 35mm and M20 mounting. FEATURES The combo set includes two 20“ STSD-M20B subwoofer/speaker extender poles Fits subwoofers equipped with M20 threaded sockets Compact cylinder design Sturdy steel construction Easy one hand operation 110 lbs maximum weight capacity per pole SPECIFICATIONS Dimension & Weight Product Width (in.) ∅1.4" (each) Package Width (in.) 1.6" Product Height (in.) -- Package Height (in.) 20.5" Product Depth (in.) 20.0" (each) Package Depth (in.) 3.2" Product Weight (lb.) 1.2 lbs (each) Package Weight (lb.) 2.6 lbs Warranty/Certifications Manufacturer Warranty 1 Year