This Frame Cuts set of dies is from Hero Arts and coordinates with the In A Pinch stamp set (sold separately). This die set is compatible with leading die cutting machines (sold separately). The crab die measures 1.1" x 1.8" and the Sea Urchin measures 2.25" x 1.75". These dies are going to help you create so many colorful and fun cards and scrapbook pages made from this set.