Air delivery hose for Triumph air filter housing box. Fitted by the factory in the attempt to supply the carbs with cold, clean air...many Triumphs now have them missing.
It is 78cm long which is the correct length for a Spitfire. It's also fitted to GT6 and Triumph 2000 but in a slightly shorter length in these cars so you can cut it down with a hacksaw to a size required if fitting to other Triumph models.
Best quality original UK made product.
You are buying one, if you need two then please buy two.