Holds Dozen cupcakes per each container, Set of 30 cupcake containers. Four Bar Locks which stay Closed, two in the front and two on the sides of the container. Disposable, but can be reused several times. The back hinge will not break! Outer Dimensions: 12 1/2 x 10 1/4 x 3 3/4 Inches. Inner Dimensions: 11 1/2 x 8 3/4 x 3 3/4 Inches. Bottom Cup Diameter: 2 1/8 Inches Stackable Crystal Clear High-Quality Plastic Cupcake Boxes. BPA Free!