About Karakui Installation: The most important part of the string, the Karakui (spool) is a poor installation that causes the poor installation of the string (sort of sore strings), so all our craftsmen have been sharpened to fit the 3 wires. After installation, you can put the string to check the tone and check for any abnormalities. If there is no problem with the 3 wires, you can also shave the spare karakui to fit the 3 lines and then check the whole tone to check the tone.