Socket for 2-pin cable. Pitch: 3.96mm. It has a protrusion that protects against accidental unplugging of the socket from the plug. Designed to conduct higher currents than 2.54mm and 2mm connectors - I also have these on my auctions. Socket together with contacts (plates). I add 5 more contacts to the shipment for free at the beginning and for every subsequent 200 pins purchased on my auctions. Price for 5 pcs.
Catalog note to download: https://tomsyty.pl/datasheets/z/zlacze_3,96mm.pdf