Ernie Ball is a leading manufacturer of guitar and bass strings. It was the first company to offer rock musicians strings with the introduction of Slinky®, and it revolutionized the music industry with the launch of Custom Gauge® string sets.

They are made from a blend of 92% copper, 7.7% tin, and 0.3% phosphorus, wrapped around a strings core made from hexagonal cross-section tin-plated steel. These strings have a bright copper-gold color and produce a sweet, ringing tone with exceptional clarity.