Casa Lambretta X12a 28/30mm carburettor manifold - 200cc type studs (Casa 225, BGM 195/225cc kit + Lambretta SX200 + TV200 + DL200)
Rubber manifold internal diameter is 34mm, it fits with Dell'Orto PHBH + VHST carbs range and similar.
As an option, you can choose to ALSO receive the Casa Performance rubber sleeve for Dell'Orto PHBL 24/25/26mm + Polini CP 24mm carburettors!