/8 200,

A breaker bar does not slip over a wrench. A breaker bar is a specific tool. It is basically a solid metal bar with an end that accepts a 3/8 in or 1/2 in socket.

Slipping a pipe or anything else over a wrench to increase leverage is NOT the correct way to break a bolt or nut loose.

Sorry to hear that the head of the bolt is ruined.

Good luck getting it off now.

-David