The 1248 XO Series features a graduated bore combined with a 5-valve design and elliptical tuning slides for the correct amount of resistance.

Jupiter 1284 Symphonic XO Series 4/4 5-Valve CC Tuba Features:

• Key: CC
• Size: 4/4
• Bore: .732-.787-inch Graduated
• Bell: 18-inch
• Bell Material: Yellow Brass
• Bell Position: Upright
• Number of Valves: 5
• Valve Position: Front
• Valve Type: 4 Piston and 1 Rotary
• Valve Material: Stainless Steel Pistons
• Features: Graduated Bore; 5 Valve Design; Elliptical Tuning Slides
• Case: ABS Molded Case
• Mouthpiece: Yes
• Finish: Lacquer, Silver

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