- Single Wood Stud / Concrete / Cinder Block Installation |Designed for any bookshelf speaker including speakers without threaded inserts or keyhole slots |Each mount supports up to 26lb (12kg) |Adjust the tilt of your speaker up to +12°/-20°, or swivel the speaker left or right up to ±35° |Aesthetic wall plate cover hides the mounting hardware |Double sided adhesive foam pads reduce vibration and prevent shifting of the speaker