"In their rugged, sealed housing, the CA 6460 and CA 6462 are easy to use and are designed specifically for operation in the field. The CA 6460 and CA 6462 help to establish a fast and accurate diagnosis with optimum comfort and safety. Use conventional stake methods (3- or 4-wire). Indicator lights warn of elements impacting measurement (noise or excessive resistance in the voltage circuit). The earth \/ resistivity kit must be ordered separately.Kit Contents = Banana Jack & Fork Plug Adapter x 5, Cable Reel x 5, Hammer, T-Shaped Rod x 4For Use With = CA6472, CA6474"