Manufacturer Part Number: 9001K17R|Switch Accessory Type|2-1/4 Inch Snap-In KnobFor Use With|Harmony 9001K/SK/KX 30 mm Pushbuttons; KR5 Operators; SKR5 OperatorsIncludes|Size|Pushbutton Type|Extended (Mushroom Head)Pushbutton Shape|RoundColor|RedOperator Illumination|NonIlluminatedMaterial|PolycarbonateLamp Type|PSC Code|UNSPSC Code|