50-105

A set of strings for a 4-string electric bass with a drawbar of 50-105 is a set of four metal strings designed to be used on a four-string electric bass.

The draw refers to the thickness of the strings, measured in millimeters, which determines the tension and strength of the strings when you play them. The strings in this set range in thickness from 50 to 105, which means that the thinnest string (the E string) is 0.050 inches (1.27 mm) thick and the thickest string (the B string) is 0.105 inches (2.67 mm) thick.

Electric bass strings are usually made of stainless steel or nickel, and their thickness can vary depending on the sound you want to achieve and the style of music you play. Thicker strings tend to have a more powerful and warm sound, while thinner strings are easier to play and have a brighter sound.

When replacing the strings on your electric bass, it's important to choose a set of strings with the same or similar drawbar to ensure that your bass stays in tune and you won't need to adjust the action or intonation of your instrument.