4 qty 3/4" in diameter and 1/8" in thickness and is made of a STRONG grade N50 neodymium magnetsGauss Rating:14,200 Gauss4Neodymium Magnets Diameter 3/8X1/16Gauss Ratings:13,500 GaussIncludes adhesive band tape to secure magnets in place on the bodyU-shaped magnets are obviously not suitable for magnet therapy; instead flat ceramic or neodymium magnets are best, otherwise short cylindrical or bar magnets may be used. The north-pointing pole generally has strengthening, stimulating qualities: it gives energy. It can be used to improve weak organs (dark markings in the iris). The south-pointing pole, on the other hand, withdraws energy: it is sedating and relaxing. It can be used for pain relief, to reduce unwanted growths (tumours) and swellings, to soothe inflammations and to arrest infections (white iris markings).The magnet does not have to touch the skin, but can be kept in a cotton bag pinned to the clothing, the specified pole facing the body. For general health improvement strong magnets - those that can lift 1 kg or more - may be applied for up to one hour daily, small or weak magnets may be left in place all day. For serious infections, strong pain or cancerous tumours, however, even powerful magnets may remain on the body as long as they seem to be beneficial.Do not use strong magnets on the brain, eyes or heart, and attach or remove strong magnets only slowly.If there is pain or signs of inflammation in an organ apply the south-pointing pole; if there is an obvious weakness, use the north-pointing pole. In most other cases, however, it is best to experiment with muscle testing to find the most beneficial pole for the condition at hand. If you are in doubt about which pole to use, try one pole for some time and later the other pole, then compare results.The length of a testing period, before reversing poles, may be only a few minutes for acute cases or several days for chronic conditions. In general, the south-pointing pole is much more often indicated and less harmful if applied wrongly, while a wrongly applied north-pointing pole may increase an infection or tumor growth. However, strong magnets suppress nerve signals and, therefore, either pole may eliminate pain. Nevertheless, I recommend to always using the correct pole as outlined in this article.While some people do not feel the magnet energy and show little response, others are hypersensitive. In this case, use only a weak magnet for a short exposure or try magnetised water instead. Do not use a magnet in bed if it has an innerspring mattress or steel frames or base. In this case the steel parts may become strongly magnetised with the wrong polarity and cause deterioration of the disease condition.A very effective method for balancing energies is by tracing acupuncture meridians with small magnets.you may place strong magnets at the hands and/or feet. For problems mainly in the upper part of the body, place the right palm on one pole and the left palm on the other. For problems in the lower part of the body place one pole under the right foot and the other under the let foot. If mainly one side is affected, the palm may rest on a south pole and the foot of the same side on a north pole. Finally, a good general placement is the right palm on one pole and the left foot on the other pole or vice versa. You may start using strong magnets in this way for five minutes and gradually increase to 30 minutes or as long as it feels beneficial.