The bundle contains one each of the following:
Additional A2 Layers Dies (310380): Largest rectangle measures: 4-1/8" x 5-3/8”; Smallest rectangle measures: 3/8" x 1-5/8"
Additional Squares Dies (310381): Largest square measures: 4-1/8”; Smallest square measures: 3/8"
Additional Circles (310382): Largest circle measures: 4-1/8”; Smallest circle measures: 3/8"
Additional Ovals (310383): Largest oval measures: 4-1/8"w x 5-3/4"h; Smallest oval measures: 3/8"w x 1-3/4"h

These dies are sized to fill the in-between sizes of the original nesting sets previously released . Together, they cover every size that you would need! A great value for a crafting staple!