2 1/2" fuel tank CAP flat chrome vented 83-3875 29-7898 01-332 BSA Triumph AJS +

TO FIT CLASSIC BIKES ie TRIUMPH BSA AJS ARIEL NORTON ENFIELD VINCENT etc. I must say it is of a far higher quality than i expected, usually things like a petrol cap are just whacked out by the thousand without a thought but it is actually well made!