I can't even think of the name of these Little Widgets rite now, And I've owned them and lost them! BUT. It's a little brass tube that can be inserted into electrical connectors to collapses the "prongs" that hold individual wires in the Male+Female connectors to allow us the customize wire harnesses. NAME OF TOOLS AND COMPANY WHERE I CAN PURCHASE THEM, PAHLEEZ, AND I THANK Y'ALL IN ADVANCE. Jer ... The Electric stores that were in all the Malls across the country has ceased to exist. I used to buy all this stuff like these brass widgets and solder wick in those stores ?????????