GROCO Thru-Hull Installation Tool [THT-530] Boat Outfitting | Seating 4-Channel Weatherproof 500W amplifier with

4-Channel Weatherproof 500W amplifier with multi-function controller -

Made right here in the USA

Gauge: 10 AWG

Protected by an aluminum housing

GROCO Thru-Hull Installation Tool [THT-530] Boat Outfitting | Seating 4-Channel Weatherproof 500W amplifier withThru 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