Thomastik Infeld Flatwound Nickel Jazz Bass Strings Long Scale 43-100 (JF344)

Gauges: 43–56–70–100 · Ball end to silk: approx. 37.75″ (varies slightly by string)

Thomastik-Infeld Jazz Flatwound bass strings are designed for players who prioritize exceptional flexibility, long life, and a warm, articulate tone rooted in traditional jazz and upright bass influence.

These strings are built on a true round steel core, allowing the string to vibrate freely with no preferred motion axis. A polished nickel flatwound outer wrap provides a smooth, supple feel with minimal finger noise and a focused, musical response.

A distinctive silk inlay between the core and outer winding increases flexibility and gently damps excessive overtones, contributing to rich fundamentals, strong dynamic sensitivity, and natural sustain. Colored silk-wrapped ends secure the windings and enhance long-term stability.

Jazz Flats are intended for standard long-scale bass guitars. Each string is hand-wound and individually inspected to meet Thomastik-Infeld’s exacting quality standards.

Jazz Flats are a premium choice for players who value feel, nuance, and longevity over aggressive brightness.