Durable Material: The frosted workmanship has good slip resistance, is not easy to deform, strong and durable, not easy to rust, and prevents oxidation and shedding.The wok ring is made of cast iron and has no toughness, so be careful not to beat it when using it. Practical Kitchen Wok Ring: Effectively prevent the pan from shifting. The wok rack will be placed on the stove rack and reduce the gap under the pan to make the heating more uniform. High Performance: The gas cooker ring the cast iron is sturdy and durable for years to usesuitable for use in the oven, on the stove, in the grill and on barbecues/campfires. Four - Groove Adjustable Design: This wok support stand is suitable for most gas stoves; Adjustable eight-groove design Suitable for bottom of cookers between 8-17 cm in diameter Groove Firmly fixed pot body original bracket. Size: The outer ring diameter is 6.75 inch ( 17.5CM); Inner ring diameter is 3.15 inch (8CM); Slot width is 0.27 inch(0.7CM).(Notice: Please kindly note the product SIZE before purchase to make sure whether it is fit your stove)