They are test probes and receptacle with 3A~5A current rating. It has spring force 150gms/ 200gms/ 250 gms.

Tradition Probes I.C.T. and Function Testing Probes sp; sp; Rigid Pin BGA Testing Probes Wire Probes Coaxial Probes High Current Testing Probes Battery & Antenna Pin B/B L/B & Guide Pin Peripherals parts of Fixture Custom-made models

PCB TESTING PROBES