Sonoff Basic R2 Pogo Pins Header

This little thing clumps on the Sonoff Basic R2 PCB and by using 5 Pogo Pins provides safe connection to the Tx, Rx, 3,3V, GND and GPIO2 with no need for soldering.
The Pogo Pins used are the P75-E2
The springs are random ones salvaged probably from an old Xerox printer (no specs)