12V Snap On Power Cords, or Female Plugs for a Snap On Optical Toe Gauge WA110A

By the way you can re-use those connectors if you are careful. The outer housing is retained by a small pin going all the way through. VERY carefully support the head side and tap the pin until the head is "raised". If you have a small enough pin punch (I don't) you can tap the pin down into the connector. At some point the pin has serrations only at the head end which will release. With the head raised, you can get a grip on the head end. Sometimes "dull dykes works