Staeubli SKPS4 SET Safety terminal 4 mm jack connector CAT II 1000 V Black, Red

Safety probe with wire-spring clip and flexible silicone-insulated shaft. Heat resistant: even brief contact with hot soldering iron will not damage it. Ribbed contact area for optimum voltage and current transfer. Set consists of one red clip and one black clip.

Price: 23.99 from Conrad Electronic