The PP-335 professional loudspeaker wall mount is designed for P.A., Church and Disco type speakers with "top hat" style holes on bottom of speakers. Has continually adjustable down titling arm. Bracket comes with standard 35 mm adapter and will work with all available Top hat type speakers. Will handle weights up to 80 lbs. Wall plate made from 4 mm steel. Please note that these units are sold as single units (if you need a pair order 2 units).