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Title: Poorly made, expensive junk
Review: I received this tool and was eager to use it to crown the frets on a personally valuable instrument. First, I could not get the bits to stay seated in the tool - even using a hex key wrench to tighten the screw - poor design. I then started trying to crown (carefully) and noticed that the teeth of the medium fret file insert (the one I needed) were dull compared with those on the other bits.Poor design. Poor quality control. I expected better.
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