Strength of this dude

The third man decided to kill Hawser, and made an effort to insert a heavy, cast iron crate spanner into Hawser’s skull. Once again, however, he appeared to be doing this in a delicate fashion, like an over-emphatic stage punch that goes wide of the mark but looks good from the audience. Hawser didn’t want the spanner to come anywhere near him. He swung out his left hand in an impulsive, flinching gesture to brush the man’s arm away.
The man screamed. He appeared to have developed a second elbow halfway down his forearm. The skin of his arm folded there like an empty sock. He fell over, the spanner bouncing solidly off the ice.

Prospero Burns pg. 324