Beads-N-Style Hematite Tube High Power Magnetic Therapy Bracelet, Pain Relief Jewelry MATERIALS: Black High Power Magnetic Hematite beads ENCLOSURE/CLASP: Magnetic Clasp GAUSS: 7.0" length is 18,230 gauss. Each additional inch adds 2,604 gauss. BEAD SIZES: 6mm, 5x8mm BENEFITS: Ease pain, inflammation, and muscle tension.