Our connecting links are not direct accessories for the bio-resonance devices, but useful accessories for everyday use. A variety of tests have shown that our physical energetics decrease when we wear closed metal circles around parts of our body (i.e. chains around the neck, arm or ankle). Our interlinks are silver or gold plated, they interrupt the closed metal circle, simply and safely. All you have to do is to fasten one between the two halves of the chain lock.