Thank you for viewing. This is a set of bass strings for the Bacehuô BBS40. Of the 4-string set, strings 1, 3, and 4 are unused, and only string 2 is missing. ・Model number: Bacehuô BBS40 ・Contents: String 1 (unused), String 3 (unused), String 4 (unused) ・Gauge: BBS40 standard (see photo) ・Due to long-term home storage, the outer packaging has scratches and storage marks, but the strings themselves are unused. These can be used for partial replacement or as spare strings. Thank you.