a nerve fires at a frequency of 50 hz carrying a message from or to the brain. when some trauma to the body occurs the nerve tells the brain something is out. The brain reacts to this process by correcting it. If the damage is too great for the brain to repair easily it starts sending endorphins to ease the pain. If the damage is to the nerve the frequency for information is hindered in the flow to the brain.this tuning fork can be used to relieve pain from pulled or strained muscles. It is also excellent for removing those knots that develop in the muscles. It will help in releasing the tightness of cramps so that the muscle will relax and the brain will send the endorphins to help ease the pain. Place the end of the stem on the area where there is pain. You may also place the side of the stem in the same area. On the weighted end of the tuning fork pinch the two ends together and slide your fingers off quickly. Hitting the end of the fork on a hard rubber object is not needed to cause the maximum amount of vibration.this tuning fork vibrates at 50 hz. about the productlength of the fork: 14cm tuned within a ±025% deviation margincomes in a blue velvet pouchanodised aluminiumanodised aluminium has a protective oxide coating by an electric process in which the metal forms the gold anode. Since the anodising process is a reinforcement of a naturally occurring oxide process it is non-hazardous and produces no harmful or dangerous by-products. Anodised products have an extremely long life span and offer significant economic advantages through maintenance and operating savings. Anodising is a reacted finish that is integrated with the underlying aluminium for total bonding and unmatched adhesion.weighted tuning forksthese forks work more on the physical level.one can feel the vibration more strongly and at a deeper level when its stem is placed on the body. This is due to the weights at the end of each prong.the sound lasts longer but is softer and more diffused.they are heavier in weight.they are shorter in length than the same fork in unweighted type.these are excellent to use for pain relief reducing inflammation and inducing relaxation.they are normally placed on the body or by the ears.to tone them one can simply tap them on the palm of the hand or use the tuning fork activator.the weighted tuning fork has round weight at the end of each prong.unweighted tuning forksthese forks work more delicately on a subtle level.they move in a physically lesser motion. The feeling of the vibration is more subtle when its stem is placed on the body.the sound does not last as long but is sharper and more crystallised.they are lighter in weight.they are longer in length than the same fork in weighted type.these are excellent to use for mental and emotional balance improving the energy field improving physical health and promoting spiritual uplifting helping to create inner harmony and wholeness.these forks are placed around the body or by the ears.to tone them one could gently tap two forks together or strike them on the tuning fork activator.the unweighted ends are straight.