A beautiful, beautiful part. Italian-made by OMG of modern materials for modern fuel. On offer is one petcock with reserve as shown, meant to mounted on the right, with a plug in the left petcock hole if necessary. Perfect for single-carb application.
No bottom ferrule is needed and modern fuel line no longer requires clamps. Installed, it will look and work fantastic, with very smooth action and NO leaking. (Jam nut and tank sealing washer not included.)
1/4" BPT thread, which will fit very late BSA ('71-on), all Norton Commando and Triumph back to the early '50s.