Silent Mount SM7X stainless steel speaker isolation mounts 70mm 4 x 70mm stainless steel spike mounts for speakers and racks. Hand crafted in Japan. The stainless steel SM7X Silent Mounts are designed to be used with both floor standing and stand mounted loudspeakers. Larger and heavier than the SM5X (50mm dia), these will deal with the considerable energy that loud speakers are capable of generating. We use the SM7X with all the speakers in our demo room and in every case they have made noticeable improvements. The SM7Xs are supplied with a set of felt pads which should be used if the floor surface is highly polished. SM7X stainless steel isolation mounts will support up to 50 Kilos in weight. Each pack contains 4 Silent Mounts.