Used, original wing nut with a long sleeve, normally used with classic Mini 1000 or Austin America air filter housings. This is a USED part; sold each. Actual condition may vary from photo(s). Also available as a new, reproduction part 12g1811. Order 12A1437 red fiber sealing washer separately. Ref 12g1811
Please note that the "wings" and sleeve length of these nuts may differ somewhat, depending on available stock (see photos).