Replace a broken or dying light bulb with the Maglite halogen replacement bulb for Mag charger RX1019 flashlights for bright, reliable lighting. The bulb is compatible with Maglite Mag charger RX1019 heavy-duty rechargeable flashlights. Replacement halogen bulb for MagLite heavy duty rechargeable flashlight # RX1019Use to maximize brightness and battery lifeFor Alkaline batteries only