The head is heavy and cuts well, but probably too big for the 1/4" shank. He can overeat and instantly pierce where the rod bends. My first one took less than 5 minutes. I ordered a second one and was more careful but hit the knot and did the same. Bent and useless. This tool is too big for its small shank and the forces are too great. $75 down the drain. I bought a much smaller competing nozzle for $15 - no problem.
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