Thomann Classic TB500 L, Bb Tenor Trombone, Medium bore diameter: 12.70 mm (.500""), Brass bell diameter: 203 mm (8""), Nickel silver outer slide, Hard chrome-plated nickel silver inner slide, Narrow draw distance, Weight: Approximately 1.5 kg, Lacquered with clear varnish, Includes mouthpiece, Reka Super Slide and case with backpack strap