Set of 2 speaker poles with M20 included in the package. ^^ Save space by easily mounting one loudspeaker on top of the subwoofer. Sturdy construction and adjustable height for home or live use. ^^ Locking knob and safety pin ensure speaker height. Adjustable height from 30 - 48 inch (76 - 121cm) to mount speakers. ^^ Fits most modern speakers with a 35mm pole mount. Fits subwoofers with M20 threaded socket. ^^ Single speaker pole can hold up to 121 lbs (55kgs).