- Markbass Longevo 4 Nano 045-105; string set for electric bass; Roundwound; Nano-Film shielded stainless steel; Outer winding made of steel alloy coated with microfilm; Brilliant, harmonious, deep and fat sound; Hexagonal core with high carbon content; Gauge: 045-065-085-105, Long Scale; Medium Gauge EUR 22.00 - See more - Buy online