Neck screw to adjust sound and response
 

 
Available in four different thread sizes for most common manufacturers:
 

 
M4: Yamaha, Buffet, Keilwerth, etc.
 

 
M4x0.75: Selmer, Yanagisawa, Jupiter, etc.
 

 
UNC 8-32: Conn, King, Martin, Buescher, etc.
 

 
W 5/32": P. Mauriat, Cannonball
 

 
Suitable for soprano, alto, tenor, or baritone saxophones.
 

 
If you are unsure about your size, or it is not listed here, just ask!
 

 
Material: Brass, uncoated
 

 

 
A Product of the Saxophon Manufaktur Marx in Leipzig
 

 
Get the Marx Neck Screw also on Thomann