The Delta Gas Stove Part O Ring Are Madeup Of Stainless Steel, It Also Known As Burner O Ring, It Has 4 Sizes In The Market Such As 70 Mm For Small Burner, 80 Mm For Big Burner, 85 Mm For Medium Burner And 92 Mm For Jumbo Burner. In This Product We Are Include Stainless Steel O Ring Pack Of 4 Pcs. We Produce High Quality Product Our All Product Are 100 % Checked And Tested As Per Standard By Skilled Personal. So That Our Product Are Competible With All Branded Lpg And Png Gas Stove