TDK Epaule necklaces are the highest quality magnetic necklaces made. Attractive, fashionable magnetic jewelry for both men and women. Each of the cylindrical, 3mm dia. x 7.5mm long, 1300 gauss REC magnets are spaced apart 1.5". Lengths available: 22" with 11 magnets, 17" with 9 magnets. The stainless steel is corrosion resistant. The S.S. necklace features a thinner, sleeker chain design with an easy to use spring type clasp. These necklaces are also super strength. Available in alternating (Alt.) only. Has been known to help with headaches, neck pain, eye pain, back pain and circulation.