These are the same aluminum DIY mask nose strips that we give away, but at a price of 10¢ each for those who would like to help support this project. Though we donate our time, space and overhead costs, having money for the tools and supplies needed to produce the strips will help us out, and help us scale up to meet more of the demand for this product.
NOTE: they're offered by the piece! Adjust the number in the "quantity" box before pressing the "Add to Cart" button. Please let us know if you have questions or suggestions (firstname.lastname@example.org)!
There's more information here including a video on how they're made.