This stainless magnetic bracelet in our line of quality magnetic jewelry has superior 4mm diameter 5200 gauss magnets in each link. This bracelet has a 1/4" wide x 3/8" long link with 20 rare earth magnets in 8 1/8" length. It has a magnetic therapy pull strength of 475 grams. Magnetic bracelets are the strongest magnetic therapy for hand (arthritis tendinitis), wrist (arthritis, tendinitis, carpal tunnel), elbow (arthritis, tendinitis) and shoulder (bursitis, tendonitus, frozen shoulder) on the arm they are worn. However magnetic bracelets will often help neck, back and knees. Determine magnetic bracelet size by measuring the circumference of the wrist and adding 3/4 inches.