GROCO Thru-Hull Installation Tool [THT-530] MAP UPC: 070382150167

UPC: 070382150167

Elastic Cuff and lined for comfort

16 Gram CO2 Cylinder with 3/8" thread

Outrigger Glass Rings (Pair)

Exterior Height (inches): 18

GROCO Thru-Hull Installation Tool [THT-530] MAP UPC: 070382150167Thru 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