Warburton Tenor Backbore 6 T* small
Warburton Tenor Backbore 6 T* small, Backbore for Tenor Trombone, With small shank, Standard model, Ø 6.35 mm bore, Silver-plated, The T (Star) series is similar to the T series, except that the hole is slightly more open, The number 1 is the smallest and 6 the largest backbore