The Bach V47X component trombone valve section is designed to fit any of the Bach Artisan Stradivarius curated modular trombones, or it can be combined with your choice of other modular components to create the ideal custom trombone for your playing needs. The V47X valve section features the X wrap design, allowing for an even feel both in and out of the valve range and extending throughout the registers. The X wrap valve section has the standard Artisan rotor with a shorter throw and improved transition between notes.