Media failed to load. Didn't have high hopes for the price I've been a locksmith for almost 30 years. It held up very well in a cold rolled steel test where the hole came out of the 1/2" drill bit to a length of 8". When I got the Finish Pass it stayed stiff and the shank is now stable. 10 Piece of mild steel and the insert showed no real wear I have video.
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