This is a JST XH style, male socket for connecting with our CON-JST-XH-7A.
JST or Japan Solderless Terminal are commonly used for connections in where you want them to be modular but securely locked when required. They are commonly found in Li-Po pouch batteries that have them for the balance leads to check the voltages of each cell.
The XH variant has a spacing of 0.1" or 2.51mm, similar to the spacings on a breadboard and can handle current of up-to 3A. You can solder 30-22AWG cables onto the lead, either stranded or solid wires all depending on your soldering skills. Alternatively you can use this for PCB layouts, just drop in and solder.
Comes in a pack of 5 units.