YBB-623S ดับเบิ้ลบีแฟลตทูบา

	YBB-623S	YBB-623
Specifications
Key	Bb	Bb
Body	Yellow brass	Yellow brass
Bell Diameter	500mm (19.7")	500mm (19.7")
Bore Size	19.0mm (0.748")	19.0mm (0.748")
Height	923mm (36.34")	923mm (36.34")
Valves	4 valves	4 valves
Finish	Silver-plated	Clear lacquer
Mouthpiece	BB-69D2	BB-69D2
Case	Included	Included