The combination of 4 brass burners and cast iron contour grates let you cook like a professional. The grates are designed for maximum space to fit pots and pans of different sizes with ease. Boil pasta, sear meat or stir fry with a wok on the power burner with dual ring flame; or delicately melt chocolate or warm cream on the simmer burner. Safety is designed-in with the 100% fail-safe thermocouple technology. It instantly shuts off the gas if the flame goes out, offering peace of mind and protection for your family and home.