The bionorth (-) pole contacts the body on these 700 to 800 gauss ferrite magnets. This small size is used for both hand and ear points, as practiced in Korean SooJi Chim Hand Therapy. 0.06" x 0.12" dia with 0.45" dia adhesive plaster, magnets are supplied on easy-to-use plastic holders. Non plated, 50/pack
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