WHAT’S IN THE BOX: an expandable and collapsible steamer insert. The collapsed diameter is 7 inches and it expands all the way to 10.5 inches. There is a removable center post for extra convenience as well CARE INSTRUCTIONS: this steamer is dishwasher safe HEALTHY COOKING: steaming is an incredible way to retain many flavors, vitamins, and nutrients in your foods. In fact, steaming helps retain more than 90% of the nutrients lost when boiling MULTIPLE FUNCTIONS: The steamer rack can also be used as a strainer for fruit, vegetables, and salads OSTER: dependable, versatile products that help you keep up with the day and feed loved ones