Item Type: AVR Automatic Voltage Regulator Material: Plastic Hole Distance: Approx. 10cm/3.9in Hole Diameter: Approx. 6mm/0.24in Application: 2-3kw 168F 170F single phase AVR automatic voltage regulator rectifier Package List 1 x AVR Automatic Voltage Regulator 1Ideal Application: Generator automatic voltage regulator is great replacement for 23kw 168F 170F single phase AVR automatic voltage regulator rectifier. 2High Accuracy Production: The AVR automatic voltage regulator is produced with about 10cm hole distance and 6mm hole diameter, high accuracy for stable performance. 3Reliable Materials: The AVR automatic voltage regulator rectifier is constructed from superior plastic for maximum durability, rustproof, has a long service life. 4Convenient Installation: Heavy duty generator automatic voltage regulator is professionally engineered for easy installation, directly install and use according to the model. 5Excellent Performance: The superior generator AVR automatic voltage rectifier is highly wear resistant, not easy to damage or break, more reliable and convenient to use.