A single high powered highest grade N52 medical therapy neodymium magnet, with a gauss rating of 14,000. The magnet is 1.5" x 3/4" x 1/4". Easily attaches with the included elastic bandage, velcro strap, etc. Ace type bandage is included. No better price anywhere for this size and quality. The finest quality and grade you can purchase. There is no more powerful or higher quality therapy magnet at any price-don't be fooled by higher priced imitations. You are buying directly from the factory of Magnetic Water Technology, a world leader in magnetic products. There is no middleman markup and simply no better value.This is the largest size you need. See our complete selection of other therapy magnets as well.