Manufacturer Part Number: 9001R20|Switch Accessory Type|1-3/8 Inch KnobFor Use With|Harmony 9001K/SK/KX 30 mm Pushbuttons; K2L Illuminated PushbuttonsIncludes|Size|Pushbutton Type|Extended (Mushroom Head)Pushbutton Shape|RoundColor|RedOperator Illumination|IlluminatedMaterial|PolycarbonateLamp Type|PSC Code|UNSPSC Code|