Rotosound RS77LE Jazz Bass Flatwound Heavy strings are designed for bass players seeking a smooth playing feel and classic warm, vintage tone. Featuring a heavy 50-110 gauge, these flatwound strings provide excellent sustain, strong low-end response and a rounded, mellow character perfect for jazz, blues, soul and traditional bass styles. Manufactured in the UK, RS77LE strings deliver the quality and consistency associated with Rotosound’s legendary bass string range.