Our “Beatle” Bass set is made up of special lengths and gauges. Each handmade flat wound stainless steel string is calibrated to fit the three different bridge types made by Hofner.- Stainless Steel Flat Wound- Deep, authentic “Beatles” tone typical of La Bella flat wound bass strings- Fits Hofner “Beatle” basses and similar models that require 34? distance from ball-end to nut- Tension: Standard- String Gauges: .050, .065, .080, .100- Made in the USA with American Wire- Packaged using MAP Technology (Modified Atmosphere Packaging) to prevent tarnishing and ensure freshness