This is D'Addario's standard bass string, "EXL170M." These are nickel wound strings, featuring a bright and balanced sound, and are light gauge strings for medium scale basses. 【Product Details】 ・Manufacturer: D'Addario ・Model Number: EXL170M ・Type: Bass Strings ・Material: Nickel Wound ・Scale: Medium Scale ・Gauge: Light Gauge ・Quantity: Set of 2 【Condition】 ・One set is unopened. ・The other set has been opened. ・The opened set's usage is unknown. ・There are some scratches on the packaging due to storage. 【Included Items】 ・Bass strings, 2 sets ※Everything in the photos is included. 【Notes】 ・This item is sold as-is, as it includes an opened set. ・Please purchase only if you understand that this is a used item. Please refrain from purchasing if you are looking for a product in new condition, as this is a used item. Thank you.