Musical Instrument Accessories

AR Resonance Backbore 40 Lead NS Trumpet AR Resonance Backbore 40 Lead NS Trumpet, Mouthpiece Backbore for Bb Trumpet, Bore: 4.0 mm (40), Backbore: lead, Weight: L (light = standard), Made of nickel silver, Silver-plated, Made in Italy AR Resonance Backbore 40 Lead NS Trumpet