This stainless magnetic bracelet in our line of superior magnetic jewelry has 5mm diameter N52 - 5200 gauss magnets in each link. This bracelet has a 5/16" wide x 1/2" long link with 14 rare earth magnets in 7 7/8" length. It has a magnetic therapy pull strength of 475 grams. Magnetic bracelets are the strongest magnetic therapy for hand, wrist, elbow and shoulder on the arm they are worn. However magnetic bracelets will often help neck, back and even reach the knees. Determine magnetic bracelet size by measuring the circumference of the wrist and adding 3/4 inches.