Ducati Bevel 750/900SS, 750GT/Sport Dual outlet OMG 16mm x 1.0 thread fuel tap set will fit all Darmah, later 900SS, Pantah etc etc. 

When this tap set is installed on a bevel drive twin, the right side tap outlet points backward so the hose winds around behind the tap and then to the front cylinder's carb. The left side tap outlet points rearward and to the rear cylinder's carb. Each tap has another outlet which points to the center of the bike and is used as a crossover, meaning you install a hose between the 2 taps.