This Sizzix Framelits Die Set features Circles, containing 4 wafer-thin dies perfect for die-cutting. These dies are compatible with a variety of materials including paper, card, metallic foil, vellum, shrink plastic, and stencil film. They are ideal for a range of crafting activities, such as creating shaker cards. The set includes circles of sizes 3.2cm, 5.1cm, 6.4cm, and 8.9cm (1 1/4", 2", 2 1/2", and 3 1/2"). This die set is also compatible with Shaker Domes and Dimensional Domes for interactive card making.