.064 There are 2 products.

The draw number of an acoustic (folk) guitar string indicates its diameter and tension. A draw number of 0.64 is quite heavy and would probably be best suited for players who have a more advanced playing technique or who seek to play more aggressive and percussive styles of music.

It is important to note that the choice of guitar string also depends on factors such as the type of guitar, the style of music played, playing technique, personal preference and playing comfort. It is therefore recommended that you try different draw numbers and string types to find the ones that best suit your playing style and guitar.