Rectify Master - fret leveling with strings on - Tip: the holes indicated with the number "5" in the figure allow the Katana tool to produce a concatenate curve while stretched or
Strings On - The Katana Fret Leveling System by RECTIFY Master. - YouTube
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R.M.KATANA - RECTIFY Master - fret leveling with strings on
R.M.KATANA - RECTIFY Master - fret leveling with strings on