Replacment top ring nut for Dellorto SSI 25-30mm "A" model carbs. This super nice billet Aluminum ring nut is special made for the early model "A" model carbs. These nuts are the sale as the " D " type nuts we have but are machined a bit deeper to screw farther down. These "A" type carbs are mostly found on Ducati N/C singles, MV, Guzzi, Etc... PLEASE check the model of your carb before ordering.
NOTE: These nuts are taller that the original "A" type of nuts but install just the same.