Seismic Audio - SA-SWM2 (Pair) - Adjustable PA Wall Speaker Stand Mount Model Number: SA-SWM2Pair (Two Steel Wall Mounts for PA/DJ Speakers) Horizontal and Multiple Vertical Adjustments Heavy Duty Steel Construction - Holds 150 lbs each Fits 1 3/8" holes tight and 1.5" loose Pre-assembled, ready to install