USED  genuine  amal pre monobloc  carb  1 X   float CHAMBER  complete

stamped 3b 

   chamber body -  threaded top with tickler ass. - brass float and taperded float needle 

   to fit triumph  norton ajs matchless panther ariel   bsa etc etc , fit amal  ,  74 ,   274  ,  75   , 275  276   models etc with remote float chamber , this is 50-60 years + old   -   nice item