Perko Medium Duty Battery Selector Switch - 250A Continuous [8501DP] Marine Plumbing & Ventilation | Strainers & Baskets Included rubber washer allows tightening

Included rubber washer allows tightening of the hull nut to irregular hull surfaces

Made of tough high density nylon

Black Polymer and Chrome Plated Zinc Alloy Top

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Perko Medium Duty Battery Selector Switch - 250A Continuous [8501DP] Marine Plumbing & Ventilation | Strainers & Baskets Included rubber washer allows tighteningMedium Duty Battery Selector Switch 250A Continuous Features: For use with 6 to 32 Volt Marine Electrical Systems Capacity 250 AMPS Continuous, 360 AMPS Intermittent When used with Non Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running Specs: Diameter: 5 1 4" Depth: 2 5 8"