Top features: - Useful hob plates for extra cooking space in a busy kitchen - Auto-shut off protects the hobs from overheating Useful hob platesNeed more hob space when cooking? Great for when you're making big meals, the Pifco P15004 Double Boiling Ring offers the ideal solution. Just plug it in next to your cooker and you've got two more hobs to use. It's also really useful for trips, student homes and holiday accommodation.Auto-shut offThermostatically controlled, you can easily select the correct temperature for your cooking. Safety features include automatic shut-off function to prevent overheating, and non-slip rubber feet keep the Pifco P15004 Double Boiling Ring sturdily in place.