Knob Disc Black is a genuine spare part suitable for selected Hotpoint and Ariston Cookers and Ovens. Compatible with the following models: Ariston D302(IX) D320M(IX) D3B(IX) D3F(IX) DK302(IX) Hotpoint E302X E3BX E3FX EV302X G310X G320X GF640K GF640X