![GROCO Thru-Hull Installation Tool [THT-530] Anchoring & Docking | Anchoring Accessories marine grade polyurethane elastomeric adhesive](https://cdn.shopify.com/s/files/1/0746/2456/5549/files/75342XL.jpg?v=1705801005)
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marine grade polyurethane elastomeric adhesive and sealant
multi-transistor SeaTalk 1 interface
Parallel switching possible using multiple battery chargers
Extension cable allows for an additional 10ft length
ULTIMA switch is rated to handle all Johnson Pump submersible pumps pumps up to 20 amps at 12 or 24 volts
GROCO Thru-Hull Installation Tool [THT-530] Anchoring & Docking | Anchoring Accessories marine grade polyurethane elastomeric adhesiveThru Hull Installation Tool Thru Hull Installation Tool The Concept: THT 530 makes the installation of standard GROCO thru hull fittings possible by a single installer. Slide the thru hull fitting, flanged end first, over the tool. (It will stop at the proper step.) Tie a length of monofilament to the eye and place it into the already cut hole in the hull of the boat. Apply caulking to the flange of the fitting, and pull the fitting through the hole