Item Type: AVR Automatic Voltage Regulator Material: Plastic Product Size: Approx. 15.5x5.1x4.2cm/6.1x2.0x1.7in (L x W x H) Hole Distance: Approx. 14cm/5.5in Diameter: Approx. 5mm/0.2in 1Professional Generator Part: This is a superior 5KW AVR automatic voltage regulator rectifier, especially designed for welding generator with professional production. 2Accurate Production: The AVR automatic voltage regulator is produced with about 14cm hole distance and 5mm hole diameter, high accuracy for stable performance. 3Durable Materials: The AVR automatic voltage regulator rectifier is constructed from superior plastic for maximum durability, rustproof, has a long service time. 4Direct Installation: Heavy duty generator automatic voltage regulator is professionally engineered for easy installation, directly install and use according to the model. 5High Performance: The superior generator AVR automatic voltage rectifier is highly wear resistant, not easy to damage or break, more reliable and convenient to use.1 x AVR Automatic Voltage Regulator