It's a pokey!
Looks like what they used on mythbusters to bore a hole in the tree trunk cannon.

These were used by marine mammal resperatory specialists in the late 1800's, when they had to perform a very risky blow-hole clearing procedure on North Sea narwhals in frigid waters where they would ice up.
That's where the old sailors got the expression, "Well, blow me down", which was later popularized by Popeye.
Nowadays, these are all made in China and are metric and powered by lithium-ion batteries.
