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Guitar Adjustment with Hex Key. Guitarist uses a hex key to adjust bridge saddles and string height
Guitar string height and intonation adjusted with hex key on bridge
Adjusting guitar bridge saddles and strings with hex key for comfort
Hex key tuning for guitar strings and bridge saddle height adjustment
Guitar adjustment using hex key to set bridge saddles and string height
Electric and acoustic guitars surrounded by repair tools, wire cutters, and spare strings
