Yamaha YSH411 BBb 4/4 size Sousaphone (with Case)

A powerful sousaphone that will hold the sound together at all volumes!Hand-lapped valves and slides Hand-lapping is a time-consuming finishing process which results in an airtight valve/piston fit for noiseless, responsive action. Well-balanced The YSH-411 is well-balanced, so it is easy to hold while marching. Heavy bracing throughout Because the sousaphone is used in marching band, it has heavy bracing throughout the instrument to make it more durable at the vulnerable points. Pressure formed tubing Perfectly rounded tubing results in less turbulence and a smoother air flow, thus allowing for an excellent scale and reduced resistance. Key: BBb Size: 4/4 Bore: 0. 728 Bell Diameter: 26 1/8 front facing bell Leadpipe Material: Yellow brass Body / Bell Material: Yellow brass Finish: Clear epoxy lacquer; Silver (YSH-411S) Mouthpiece: 67C4 Pistons / Valves: (3) Nickel-plated, front action Extra mouthpipe bit included