Two Mounting OptionsThis outdoor post lights are available for both post mount and pier mounts, allowing installation on flat surfaces like pillars or columns. Alternatively, it can be placed atop a 3-inch outer diameter light pole. Perfect for lamp post light, pillar light, and pier mount lantern. (Package does not include base and pole) Various E12 Bulbs CompatibleThe outdoor pillar lights hard wired are compatible with all types of E12 base bulbs (40W Max). This gives you the flexibility to choose the type of bulb that fits your requirements and enjoy the benefits of this versatile rustic outdoor lighting fixture(Please note: bulbs not included.)