nos genuine , 1 x 4 / 042 amal pre monobloc carb main jet you choose 1 jet ! available =
2 x 25cc
5 x 50cc
5 x 55cc
2 x 60cc
2 x 65cc
2 x 70cc
5 x 80cc
3 x 110cc
4 x 120cc
4 x 130cc
1 x 240cc
3 x 270cc
1 x 300cc
, to fit triumph norton ajs matchless panther ariel bsa etc etc , fit 276 76 275 75 289 89 pre monobloc carb let me know which size you require