Solid Copper Thunderbird Silver Plated Phoenix Magnetic Therapy Celtic Cuff 6 strong Magnets, each Magnet between 2000-3000 gauss. Matte silver plated finish, highly polished, solid Copper Bracelets Cuff is 7" long and will fit up to 8 1/2" wrist. Cuff is 1/2" wide. Magnetic bracelets are believed to relieve arthritis, enhance sleep, increase energy and promote better blood circulation