General description High quality non-genuine replacement oven control knob compatible with Belling Forum 300 Series. This pack includes 6 knobs, designed to replace the original parts effectively. Technical specifications Diameter of knob: 24.8 mm Shape: D shape shaft Replacement for genuine part number: 450920081 Compatibility and accessories Compatible models: Belling 317AN Belling 317SI Belling 334AN Belling 334SI Belling 335AN Belling 335SI Belling 336 Belling 351MK2AN Belling 351MK2SI Belling 351SI