Hi @okthais this string is from KreationKaos on Etsy. She is a tie dye artist that hand dyes DMC cotton perle size 5, This string is from my first order. She does shop drops every Friday evening. She is based in the US.
I see you are located in Spain? I just placed my first order from Spain based Pomegranatecolours on Etsy. Also hand dyed DMC cotton perle size 5.
The B and C strings definitely need to be long. They are knotted with on every row. I ran out of the B strings after knotting 2/3 of the bracelets, and they measured 105 cm on each side. Adding strings are a nuisance, but in this case it went OK.