Check the listing for details. Tensor Ring, 1/8 Earth Core Cubit, Toroidal Vortex, Brazed.... Condition: New. Listed at 29.00 USD. 1/8 Earth Core Cubit, Brazed... EMF Protection, Energy Work, Water Structuring, Pain Relief, Improved Sleep, Reduce Stress and Fatigue, Promotes Plant Growth. Individual experiences may vary. Hand crafted of 14 gauge copper wire and copper, phosphorous, and silver braze rod at the connection. Circumference - 2.456 Diameter - .78" US ring size - approx. 6 1/2 Meticulously measured, constructed and brazed by a 25+ year machinist. Careful attention is paid to joining the correct ends at the weld to complete a functional super conductor circuit.