Replacement bulb for Kavo handpieces and lux couplers. 3.3 volt/ 4 wattLight Bulb, 3.3 Volt 4 Watt, Dabi Atlante, Kavo(Kavo #1002.2928)Requires 3.3 Volt / 4 wattFits Kavo lux coupler previous PN 553-3881 and current PN 1002.2928Dabi Atlante