Dear customer, all our pot LIDS are of outer diameter size. If the wok you want to match is 30CM, you should choose a 32CM lid.
Our pot LIDS are all universal.
A 30CM lid is suitable for a 28-29.5 wok, a 32CM lid for a 30-31.5 wok, a 34CM lid for a 32-33.5 wok, a 36CM lid for a 34-35.5 wok, a 38CM lid for a 36-37.5 wok, and a 40CM lid for a 38-39.5 wok.
To avoid the trouble of returns and exchanges, it is recommended that you contact customer service before purchasing!
 

Special Note:
All the quotations for our factory's products are factory prices excluding tax and freight. Unless otherwise specified by the customer, we will only provide receipts or shipping lists and not invoices. If an invoice is required, the cost will be calculated separately. For more details, please contact us.
Regarding freight:
■ Freight handling: For small quantities of goods, express delivery is generally used. The default express delivery is YTO Express. All the goods in boxes above will be transported to the city designated by the buyer through consignment. It will take 2-4 days to reach the direct city and 4-6 days to reach the transit city. (If there are urgent goods, you can contact the customer service to arrange the fastest logistics.)
■ Shipping Fee Description: When purchasing the goods, there is no need to fill in the shipping fee. The shipping fee is payable on delivery. If necessary, we can calculate the freight for you and notify you when the goods are dispatched.
■ Precautions: When receiving the goods, be sure to confirm at the logistics station whether the outer box is damaged. If the outer box is severely damaged, please contact the staff of our store in time before signing for the delivery
Regarding payment:
■ Guaranteed Transaction: Our store recommends using Alipay for guaranteed transactions. Sellers are at ease and buyers are reassured. You can click to confirm receipt after the order is completed.