Manufacturer Part Number: 9001K41|Switch Accessory Type|Ring NutFor Use With|Harmony 9001K/SK/KX 30 mm Pushbuttons; KP Pilot Lights; KR1 Pushbuttons; KR12 Pushbuttons; KR4 Pushbuttons; KR5 Pushbuttons; KR9 Pushbuttons; KTR Pilot LightsIncludes|Size|Pushbutton Type|Pushbutton Shape|Color|Operator Illumination|Material|Aluminum; ZincLamp Type|PSC Code|UNSPSC Code|