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I vibrated the pin out of my 20" Craftsman 1/2" breaker bars last week with the air impact and put it back together without the ball bearing that keeps the head in place. I went to use it today and it was floppy all over and there was no way I was going to find the ball bearing on the ground outside, so I grabbed a ball bearing out of a box that was about 3/16" in dia. and put it back together again. 45 years old and it is as good as new.
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