used

unknown 

vintage Brass meshed  bell mouth.

threaded 

approx 29mm internal dia on thread ! 

approx 18 mm deep

adapt to fit ! 

   -  clean up  or leave  ! 

look great on un restored   / original runner 

Approx31.5 mm id

Does tightly push over threads of Amal 276 carb

Or solder onto tube / sleeve

  ,  to fit triumph  triton tribsa BSA norton  sunbeam   PANTHER ARIEL AJS MATCHLESS velo  etc etc ,