Tempered glass pot lid, approximately 19cm in diameter, with a black handle. - Type: Pot lid - Material: Glass and metal - Size: Approximately 19cm in diameter - Features: Transparent glass allows you to see the contents - Handle: Black plastic handle - Notes: Label with usage instructions included Bestco Co., Ltd. Tempered Glass Utensil Type of Tempering: Fully physically tempered Pot lids with holes are often seen in dishes like oyakodon, katsudon, and egg bowls, where eggs are simmered. A large hole in the center is for steaming the eggs without boiling over. Pot lids with very small holes are for traditional simmered dishes. These lids have been helpful in many ways, and the holes are for preventing boil-over during low-heat simmering. (Quote from the internet) I have several lids of the same size, and I am listing them for sale. They are used items. For those who understand - Also suitable for handmade materials on YouTube - Thank you for viewing.