Suzuki GSX750F Carburettor body with butterfly/shaft assembly , I believe this fits from 1989 through to 1999 but please check pictures carefully to ensure it is correct for your exact year and model 

There may be a pilot jet showing in the pictures , this will have been removed 

Number 4 carb as you are sat on the bike looking down counting from left to right

Very nice used condition with all threads and fitting points intact and butterfly/shaft turning freely   

Has been washed of and degreased with petrol but would benefit from a further fine clean before use   

SL GSX750F  Carb box