Manufacturer: J.Michael Model Number: TU-5000 Key: B♭ [Product Description] Full-size 4-rotor system tuba 4 rotors Bore size: Approximately 20.80mm Bell size: Approximately 420mm Finish: Lacquer Yellow brass Outer slides: Nickel silver 4 rotors to extend the low range Rod end bearing action for improved operability List price: ¥470,000 This is the manufacturer's top model. The quality is comparable to YAMAHA's YBB-641. [Condition] Sound checked, no issues. Rotary system is perfect. All outer slides can be removed. There are two small, inconspicuous dents. Some minor scratches, but it's in good condition. Ready to play immediately! [Included Items] Main unit Semi-hard case Mouthpiece As shown in the pictures! Please ask any questions in the comments! Please understand that this is a used instrument, and refrain from purchasing if you are overly concerned about the condition. Since this is a used instrument, we cannot provide a warranty. Thank you for your understanding!