The warning lights can be assembled with different base,like cup base,tripod base,pole base,iron bracket base,clamp base. Different base for various application.The up body of the lamp is made of PS material which is hard to break & durable in using. It functions in flash-close mode with light control which makes it easy for use,it will automatically start working at nighttime, off at night time. Multi-purpose warning light. Suitable for traffic construction, crane tower, vehicle, house, etc... Simple installation, no wire is needed. Just fix the bracket on the place where you need. Excellent performance------This warning light has exquisite workmanship, long lifespan, and perfect performance.