This is a lid for an o.e.c. omelet pan. Lid only. I recently purchased this lid for a cast iron omelet pan, but upon opening it, the size didn't fit, so I haven't used it at all. The retail price at the KAI store is 3,630 yen. Material: Surface treatment: Fluororesin coating, Body: Aluminum alloy, Knob: Phenolic resin (heat resistant temperature 230°C) Size details: Body size: 200 x 148 x 51mm Weight: 220g Country of origin: China JAN code: 4901601201598 From the product description on the Kai store page: The [o.e.c.] series is full of ideas from cooking researcher Masayo Waki. This is a lid for an o.e.c. omelet pan. The shape, with rounded corners, and the height of the dome, which considers the steam effect, are one of the details that Ms. Waki is particular about. By making it 27.4mm high, you can expand your repertoire of dishes, such as making soft-boiled eggs with a small amount of water or baking roll cakes without an oven.