BC100-5 100% Pure Copper Magnetic Band '8 Magnets' Thin Curved100% Pure Copper Health Magnetic Band,10mm wide 3000 gauss Copper 8x Magnetic Band Copper magnetic 3000 gauss power bands with a magnet each end embedded in our copper, in many designs and sizes to choose. Metal Content: We use the finest copper available to handcraft our Copper bracelets. It is 99% pure Copper. "Copper, when in contact with the skin, forms chelates with human sweat (sometimes seen as a green deposit under the bracelet) and is thus