1.Made by insulating material,avoid electric from Poles of metal. 2.uvioresistant, hard wearing, resistance to weathering, Made by insulating material,avoid electric from Poles of metal, uvioresistant, hard wearing, resistance to weathering, anticorrosion .1. Angle : 90°/up 95°/ down 85°2. 360°reflection,no blind-spot .3. Only need gentle breeze to turn, rotate speed:50/min.4. knighthead made by ...