Every Thing and every Shape emits a certain subtle energetic vibration. Each tetrajack (in the set of 5) has a sum total of angles that equal 888 degrees, which happens to be a number that in science is the number of univeral consciousness, sometimes called Christ consciousness.
Keeping this set near you reduces stress and increases a sense of well-being. The stress reduction this produces at the cellular level in your body is most valuable for healing from any ill health condition, as stress is a major cause of poor health and literally wipes out the immune system.
The increased happiness will be an additional benefit. They last indefinitely.