Knob kit (1 x knob, 3 x adapters) to suit most ovens, cooktops and ranges on the market. Adapters are used for different shaft sizes and orientations, plain silver colour blends in with most appliances. Can be fitted to oven thermostats, selector switches, hob controls, even gas burners. Diameter is 42mm, please make sure this size will not obscure any control panel markings you need to see