This 25 piece thin metal die set, Spooky Treat Box Add-On is from Trinity Stamps. This add-on die set coordinates with the Trinity Treat Box die which is shown on the cover (sold separately). This die set features a door with an opening option to create an interactive card. There are also windows, curtains, pumpkins, a ghost, a witch, and other pieces to add to the Treat Box die set. These dies are compatible with leading die cutting machines (sold separately). These dies can also be used on cards, scrapbook pages, tags, journals, and other paper crafting projects. The largest die, the door and porch base, measures 1.4" x 2".