This set of thin metal dies is from Honey Bee Stamps and is part of the Let's Celebrate Collection. These dies are compatible with leading die cutting machines (sold separately). This die set has a coordinating stamp set (also sold separately). The cake die measures 2 1/2" x 2 1/2", the balloons measure 1" x 1 1/8", and the banner measures 2 3/8" x 3/4". This set includes everything you need to make a beautiful birthday or other type of celebration card or other paper crafting project.