The redesigned octave key system gives players the flexibility to choose between the included 62 style neck and those designed for the Custom Z and Custom EX Yamaha saxophones. A new 62 style neck has been designed for improved tone and response. The separate key guards feature adjustable screw cap stoppers for professional-style technical adjustments. A left-hand seesaw key has been designed to increase playability as well as provide a more comfortable feel, and an improved mechanism from low B-C# ensures the consistent closing of the low C# key and promotes a clear response from notes in the low range of the instrument.