Features Screw Base: This light is designed with a screw base that the installation is as convenient to install as a traditional bulb. Stable Use: This light features anti skid and anti loose design, ensures that the battery and tools are perfectly matched, safe and reliable. Applicable Scenarios: This light can be applied in both indoors and outdoors, like use in the home, basement, underground garage, field and other places. Compatible Battery: This light is compatible with for BL1815 BL1815B BL1820 BL1820B BL1830 and other 18V lithium batteries(not included). Ideal Replacement: This high brightness light can be easily installed, ideal replacement for the old and damaged parts. Specification: Item Type: LED Bulb Light Material: PC Luminous Flux: 700 White Light: 6500k Bulb Input Voltage: 12-60V Applicable to: for BL1815 BL1815B BL1820 BL1820B BL1830 BL1830B BL1840 BL1840B BL1850 BL1850B BL1860 BL1860B BL1845 BL1890 BL1890B and other 18V lithium batteries x 1 [shipped without batteries] Package List:1 x LED Bulb Light1 x Battery Adapter  Note:1. Since this product has fragile bulbs, it cannot be used and collided by gravity. It must be noted that the bulbs cannot collide with hard objects.2. Since the interface between the bulb and the base is not sealed, pay attention to waterproof and anti leakage.3. When replacing the bulb, be sure to separate the battery from the base (to avoid generating power).4. Product shipping requirements: one LDE lamp and one base in the packaging carton, excluding batteries and tools electric drill. Package List 1 x LED Bulb Light 1 x Battery Adapter