Prelude strings are the educators preferred choice for student strings due to their unique blend of warm tone, durability, and value. Prelude strings have the warmest sound available in an affordable, solid steel core string design. Unaffected by temperature and humidity changes, they have excellent bow response. A solid steel core contains a pitch-stable alloy for durability and resilience, providing the greatest longevity of all the string cores. Engineered for unparalleled longevity and durability Balanced tension for a comfortable feel Great for classical, fiddle, jazz, and alternative styles Designed, engineered, and manufactured in the USA Specifications Instrument: String BassPitch: Full SetSize: 1/8Tension: MediumManufacturers Model: J610 1/8M Set Includes GString No. J611,Stainless Steel Wound w/Stranded Steel CoreD String No. J612, Stainless Steel Wound w/Stranded Steel CoreAString No. J613, Stainless Steel Wound w/Stranded Steel CoreEString No. J614, Stainless Steel Wound w/Stranded Steel Core