Electro Guard - ZI-9 - Zi-9 1/2 Insulated Bolt

Electro-Guard manufactures reliable and cost-efficient method of cathodic corrosion prevention for boating and naval systems. A constant protection level is maintained by an electronically controlled system easy-to-use monitors to measure cathodic protection performance and indicate influences by stray electrical currents. Electro-Guard's models are specific to boat size and hull construction--including fiberglass, wood, aluminum and steel boats to more than 300 feet long.