Title Control Knob Title Control Knob Read full description Read full description This product is available to buy from one of our many retail partners online and instore: Features and Benefits Technical Specifications Features and Benefits Technical Specifications Features and Benefits Full description Compatible with: Black Beauty 347, Black Beauty 340, Helmsley Elec 347 Technical Specifications Product Identification Product Model Number 0579419 Features and Benefits Full description Compatible with: Black Beauty 347, Black Beauty 340, Helmsley Elec 347 Close Technical Specifications Product Identification Product Model Number 0579419 Close