Carburettor main jet for the vintage twin barrel Carburettor ( both barrel are the same size).
Drilled 28 thou use a set of number drill to increase in size if needed.
casting rear stay ends casting
2 cast needed per rear stays
Sold as 1 casting 1 top lug and 1` bottom lug
can be used in most model to make the stays from
nut 5/16 whit thin
5/16 whit x 1/4 wide x 0.525 hex