A set of strings for a 6-string electric bass drawing 43-135 is a set of six strings designed specifically for six-string electric basses with a tension of 43-135. The lower strings are thicker than the higher strings, allowing for lower notes to be played while maintaining proper tension.
In general, electric bass string sets are graded by gauge or thickness. The gauge of 43-135 means that the lowest string is .135 inches (about 3.43 mm) thick and the highest string is .043 inches (about 1.09 mm) thick.
When purchasing a set of electric bass strings, you should make sure that it is compatible with your bass. Six-string electric basses require specially designed sets of strings, as the lower strings require more tension to produce clear, distinct notes.
In general, stainless steel strings last longer than nickel strings, but they can produce a brighter, more metallic sound. Nickel strings, on the other hand, tend to produce a softer, warmer sound, but they wear out more quickly than stainless steel strings.
In summary, a set of strings for a 6-string electric bass drawing 43-135 is a set of six strings designed for six-string electric basses with the proper tension to produce clear and distinct low notes. It is important to choose a set of strings that is compatible with your bass and to choose between stainless steel or nickel strings depending on your tonal preferences and the life of the strings.