Farm Innovators H-429 Submergible Tank De-Icer, 1500 Watt Multi-use Screws It can be used as

It can be used as a protective coating over fiberglass

and eliminates spinning and fastener damage

allowing the user to verify the presence of AC voltage prior to working on an electrical installation or during troubleshooting without requiring physical contact with live electrical conductors

Use with 40 pound roof felts or heavier

Electrically non-conducting

Farm Innovators H-429 Submergible Tank De-Icer, 1500 Watt Multi-use Screws It can be used asHighlights: Thermostatically controlled to operate only when necessary Designed to rest in the bottom of the tank unnoticed by livestock Protective sturdy cage permits use in all tanks Safe in plastic