Thomann wooden mouthpiece for french horn, size 12, made of Ebony wood, allround mouthpiece with upholstered edge, cup inner diameter: 16,80 mm = 0.66 Inches, cup outside diameter: 24,50 mm = 0.96 Inches, bowl shape: medium deep, drilling: 4,40 - 6,20 mm running = 0.17 - 0.24 Inches, total length: 67 mm = 2.64 Inches, brilliant sound, elaborate 5-layer lacquering, shaft oiled several times on the inside, extreme longevity, made in Austria