The Ernie Ball Regular Slinky Nickel Wound Medium Scale Bass Strings are designed for bass guitars, with a medium gauge thickness for a perfect blend of tone and playability. Made in the United States with high-quality materials, these strings are crafted from nickel-plated steel and have a grey colour. This set includes 4 strings, each measuring 45-105 gauge, and is suitable for bass guitars. The Ernie Ball brand is known for producing top-notch strings that deliver exceptional sound quality and durability for musicians of all skill levels. Ideal for bass players looking for reliable and versatile strings for their instrument.