Thomann Trombone 12C-S Nut Wood, Wooden Mouthpiece for Trombone, Size: 12C-S, Made of walnut wood, Small trombone shank, All-round mouthpiece, Inner cup diameter: 24.50 mm, Outer cup diameter: 38.20 mm, Medium shallow cup, Medium wide rim, Good response in the entire tonal range, Bore: 5.5 mm, Total length: 80 mm, Excellent 5-coat varnish, Shaft oiled on the inside several times, Extremely durable, Made in Austria