Allen Products MultiMount MM-120-BTM, Pan and Tilt Speaker Mount (Mounts to Bottom of Speaker Only), 120Lb Capacity, Black Supports Speakers up to 120Lbs, Bottom Mount Pan angle secured by clutch style lock. Infinite tilt adjustments with thumb-wheel. Telescoping arm secures in three positions. Adapts to 4 hole mounting patterns including 3-7/16 x 6-7/8 and 2-3/4 x 5 and 100 x 100 mm VESA pattern.