Main jet 6mm Mikuni/Dellorto carbs

6mm thread main jets to suit carbs fitted to most Yamaha and clones, Mikunis as fitted to Suzuki SJ50 (SJ50QT), Hyosung Rally/SF50, plus some Dellorto carburetors as fitted to Piaggio, Vespas (PHB/PHBL/PHVA/PHVB/VHS, MIKUNI VM16 -20). Jet heig