high quality materialThese wok ring universal for gas hobs adopt cast iron with high heat resistant coating which is sturdy and durable,good skid resistance, not easily deformed,no rust SizeThese wok pan support stand for gas hob Size Inner diameter: 16CM,Outer diameter:17.7cm,Height: 3cm,very useful for round bottom wok,perfect for balancing smaller pots or pans on the stovetop or replace the old or worn one of your gas stove. perfect accessoryThese wok stand is an accessory that every gas hob top should have,especially for any Asian food lover or Asian eating establishment,Perfect for creating some amazing stir-fry dishes . MultipurposeThis universal cast Iron stove round trivets will sit on your hob grates and reduce the gap above your burner allowing for smaller pans / moka coffee makers. Material:Cast iron Color:black quantity:1 Size: Inner diameter: 16 cm Outer diameter: 17.7 cm Height: 3 cm Includes:1 x Non Slip Cast Iron Stove Trivets