Etekcity 4 Pack Deluxe Universal Speaker Mounts/ Brackets for walls or ceilings, with carbon fiber epoxy compound material, 10lb weight limit, 4-axis tile and rotational adjustment capability, Used with speakers with one threaded mounting holes, two threaded mounting holes, or keyhole mounting holes 11 pound max weight limit Ideal for mounting home theater/surround sound speakers on walls or ceilings 4-axis tilt and rotational adjustment capability Designed to fit speakers with one threaded mounting holes, two threaded mounting holes, or keyhole mounting holes