All, Spun aluminum toroids, 1.5" by 6" overall diameter, half shells are glued together, brushed satin finish, 1/4" mounting hole. These look and work great on small table top coils and give a nice professional look. $42, includes shipping within the U.S. Quantities limited. Or for further info. contact me directly at; < FutureT-at-aol-dot-com > John Freau 49 Thiem Ave. Rochelle Pk, NJ 07662