My bass is a 4/4 and I'm in a need for a E string. Is the first time I get bass strings, and I'm ordering on the internet (I'm from Guatemala). Problem is that I don't know how to know if the strings I'm ordering will fit... what if are intended for a 3/4 or something like that? I've been checking on Amazon and all strings are 3/4, 1/4, and even 1/10, 1/8 and so.. so I'm really confused jajaja.. any tip on how to know if the string matches your instrument? I really don't want to waste money on strings that don't match my instrument.