SI

3-6 meters (optional)
1. (45*100) octagonal pole ≤ 6 meters telescopic pole
2. (38*90) elliptical pole ≤ 6 meters
3. (45*400) folding arm rod ≤ 6 meters
4. (38*78) foam pole ≤ 3.5 meters
5. Carbon fiber pole ≤ 3.5 meters