High-quality spiral core strings, excellent sound quality and playability for double bass. These were only on a display double bass for 3 months, so they are in good condition. Set of 4 strings: E, A, D, G. - Brand: THOMASTIK INFELD - Model: SPIROCORE S42W - Type: BASS ORCHESTRA - Gauge: LIGHT - Sound Quality: brilliant / warm - Focus: rich / focused - Playability: Jazz / Classic - Tuning Stability: excellent / average - Tension: low / high Thank you for looking.