GROCO Thru-Hull Installation Tool [THT-530] Automotive/RV | Cleaning vacuum pump

vacuum pump

Lanocote Rust & Corrosion Solution Prop and Bottom - 16 oz

BOLT 12x9 Electric Trim Tab System - Control Switch Required

Stainless Steel Side Mount w/ Swivel Base

7226 AC/DC Single Pole Magnetic World Circuit Breaker - 40AMP

GROCO Thru-Hull Installation Tool [THT-530] Automotive/RV | Cleaning vacuum pumpThru 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