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A complete set of four bass strings, from right to left, the strings are from thin to thick.
Find the strings you need to replace and wear them from the tight strings.
Reserve enough length, and then cut out the extra strings. It is recommended to reserve the length of 2 tuners spacing.
The strings are mounted on the tuners: first insert the strings down, then turn them clockwise, after fixing the strings, turn the tuners to tighten the strings.