Item Raw Brass (not lacquered) and may require some filing down and shaping for proper fit. CHECK SIZE. This item requires a professional to solder on.

Center foot for Bb/B key guard.
According to manufacturer, item should fit:

142    Selmer  Alto Saxophone 
AS200  Selmer  Alto Saxophone 
2142   Bundy  Alto Saxophone 
1242   Bundy II Alto Bundy  Alto Saxophone 
1042   Buescher  Alto Saxophone 

Many more parts available.