 It was a torque wrench and a multimeter. This is Under the Hood. 866-594-4150. I have a question. What other tools besides the socket extension will work for that? Will a big old screwdriver with the plastic head? No, I like the metal of the extension because it will transfer the sharp metal tick, tick, tick of the injector all the way up so you can hear it. Like a stethoscope does really good for that. A mechanic stethoscope that's not open.