Convenient. Includes a pair of wall-mountable speaker brackets for stand-free support of a set of two speakers for stereo playback or mono sound coverage over a wide area. Strong. Heavy-duty steel construction ensures reliable weight support and provides outstanding strength for dependable mounting of small speakers weighing up to 80 pounds each in schools, clubs, bars, restaurants, houses of worship, and homes. Versatile. Comes with hardware for secure installation on wooden wall studs through drywall. The brackets can also be installed on concrete walls with hardware approved for concrete (not included). Compatible. Speaker pole accommodates cabinets with a 1 3/8" mounting socket and the included adapter sleeve enlarges the pole to fit cabs with a 1 1/2" mounting sockets.