Thomastik-Infeld Spirocore Bass … Thomastik-Infeld Spirocore Bass A 1/2 Item No. 3887.4 Manufacturer Thomastik-Infeld Thomastik-Infeld Spirocore Bass … Thomastik-Infeld Spirocore Bass A 1/2, spiral core, chrome × Thomastik-Infeld Spirocore Bass A 1/2