1.Materials:float glass . 2.size:12cm-40cm 3.Ring:s/s201, s303,s304 Specification:1.Materials:float glass . 2.size:12cm-40cm3.Ring:s/s201, s303,s3044.The glass thickness is 3.8-4.0mm 5.with a konb hole and a steam hole6.packing: a paper between every glass lid Handle is available. glass lid for all kinds of pot