Goldstein Gas WOKS Air Cooled Gas Wok Single Burner/ with side Burner CWA1B2.Type: Wok Diameter: 356 mm Ring Type: Dual Ring (D R) Wok Styles: Mongolian (M G) Duckbill (D B) This suggests you are looking for a versatile wok with a dual ring configuration and different styles, such as Mongolian and Duckbill. The dual ring design may offer flexibility in heat control, and the different styles cater to specific cooking preferences.