GROCO Thru-Hull Installation Tool [THT-530] Marine Hardware | Gas Springs Covering the mounting holes that

Covering the mounting holes that would otherwise be visible

Snap fit removable becket pin

Real Time LED Status Indicators

VPK 30A 125V locking blade female shore power connector features corrosion resistant contacts and terminals

UPC: 760687116738

GROCO Thru-Hull Installation Tool [THT-530] Marine Hardware | Gas Springs Covering the mounting holes thatThru 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