Pair of K & M KM 19764 Speaker Tilt Adapters.

Attaching these adapters between your speakers and your suitably-sized speaker stands allows the speakers to be tilted between 0 degrees and 15 degrees off axis.

The Tilt Adapter mounts to a 35mm diameter speaker stand, and the adjustable (35mm to 37mm diameter) adapter post, that inserts into the speaker mounting hole, can be tightened by turning the associated locking ring (prevents a tilted speaker from rotating on the mounting post).

Can accommodate speakers up to (but not exceeding) 55 pounds each.