Daddario K615-3/4H Kaplan Double Bass String C Extended, C-single string ( extra long E-string for extension machine ) for 3/4 sized double bass, tungsten wound stranded steel core, heavy tension, K615-3/4H.

Daddario CB105 Bass Single String, bass guitar, single string, Chromes series, gauge: 105, longscale, flat wound, stainless steel

Daddario XLB160 Bass XL Single String, single string for bass guitar, gauge: 160, Llngscale, nickel, steel core, roundwound