I used to work for a machine shop that made lots of stuff - parts for cars, aircraft, medical devices, all very exciting. But the real money maker? Little clamp

I used to work for a machine shop that made lots of stuff - parts for cars, aircraft, medical devices, all very exciting. But the real money maker? Little clamps for holding sections of drill shafts together. Oil extraction companies go through literal tons of them every day and don't give a damn about cost. It was quite an eye opening experience.