For “ceramic-sealed anodes” with barrel plug.

This adapter is suitable for use with STOLTCO powered anodes that have a single barrel plug receptacle (looks like a hole with a a pin) located at the top of the anode, and is intended for use with all sizes of gas-heated tanks, and for use with electric tanks any size up to 4500w of heating. It will have a indication of working circuit in-line, making visibility easy at the side of the tank, rather than at the outlet. Please note: shipping will be via USPS Ground for this item. Please see other listings in store if your anode uses a flat-style (“spade” or “flag”) connection type.