Cylinder Stud (Vintage Vespa), 7 mm
Long 7mm stud with threading on both ends. Used for fastening cylinder head and cylinder to the engine on most 60s-70s Largeframes, as well as Primavera/ET3.
Does NOT fit GS/SS/Handlebar bikes/Rally/P200. Those require 8mm studs.
You'll need four for a set and you'll also want 7mm hardware (nuts and washers) to finish the job.