For use ONLY with the following Equipment: DF1 Rife Frequency System DF Wave Rife Frequency System This Dual adapter allows two sets of applicators, from the following list, to be used simultaneously. Copper Handgrips Copper Footplates Wriststraps You may mix and match any of these, as long as they are supplied by us and therefore share a common BNC connector. The adapter is supplied on its own, and requires purchase of the additional applicators as listed above. Footplates / wriststraps / handgrips NOT included. Zero shipping charge if ordered with other of our products at the same time.