The AC420B Legend Series features a .547-inch bore designed for excellent response plus an 8.5-inch bell with superior tone. The AC420BT Series features a F Attachment with open wrap plus regular and a Thayer valve.
All WEINERMUSIC instruments are serviced by Mark Kasten,
.547" bore
8.5" bell
Open wrap F- attachment
Thayer valve
Brass outer slide
Deluxe case