Thomastik Infeld Spirocore violin string set 4/4 medium id: 29216 sku: TH-S-15A brandname: Thomastik Infeld series: Spirocore Details Documents violin string set 4/4 medium, spiral core, includes TH-S-8, TH-S-10, TH-S-12 and TH-S-13 Thomastik violin strings brochure