Product Description We can manufacture High Volitage and High Tension insulators from 110kv to 750kv. The insulators can be used on the Arresters; Transformers; Mutual Inductors; Breakers or Switch etc. The longest insulator can reach 4.4 meters, and single piece of insulator can reach 2.336 meters. And they can be glazed Brown or Grey. Product Feature High Tension! High Voltage! Perfect Electric & Mechanical Performances.