This sale is for one brand new 72mm front lens cap, suitable for use with all 72mm filter size lenses – typically Bronica as far as medium format goes but also many Canon, Nikon and other camera lenses.
This pinch-type cap is brand new in original sealed packaging. These caps were found during a stock check; personally I prefer the other 77mm caps that I have for sale (https://ianbfoto.com/product/77mm-pinch-lens-cap/) but these protect the lens just as well. Dead cheap to clear.
When they are gone they are gone. If you want a few caps (or other sizes), just ask.