Ideal for sound contractors, mount this bracket on the walls at night clubs, recording studios, home multi-media rooms, schools or just about anywhere! For mounting on flat surfaces this adjustable bracket features a tilting angle adjustment as well as a 30 degree swivel hinge. The stress rated steel hex nut and bolt is strong enough to support up to 80 lbs. and also allows for horizontal swivel adjustments 30 degrees left and right Standard 1 3/8" insert fits most speaker cabinets Ergonomic 2" knob adjusts tilt angle from 90 degree angle to 30 degree angle handling 22" to 30" cabinets On-Stage Item No. SS7322B; 11715; 40983