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GROCO Thru-Hull Installation Tool [THT-530]

Marsoni M251S
Sale price$164.99
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Get it in 3 business days with 1 day shipping. Friday, May 29
GROCO Thru-Hull Installation Tool [THT-530]Thru 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
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  • We offer a 30-day return/exchange service after receiving.
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4.9 ★★★★★
Based on 2082 reviews
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Verified Purchase
Juanita G.
Lexington, US
★★★★★ 5
Stop searching
Color: Black, Size: 2+1 Tier Size
Ive purchased 5hese a few times now. Looks good. Reasonable price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
H
Verified Purchase
Heather
Boise, US
★★★★★ 5
Versatile high quality shelves.
Color: Black, Size: 2+1 Tier Size, Color: Black, Size: 2+1 Tier Size
Versatile! We wanted shelves for our bathroom that could store some items that one would use in a guest bathroom, including toilet paper, hand towels, Q-tips, cotton rounds, etc. I am very happy with the quality. The wood shelves are sturdy as is the metal frame. Super easy to assemble and put up with included instructions. The capacity is perfect for bathroom items and it holds the weight of the items shown. Great value for the fair price.
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Reviewed in the United States on April 18, 2025
C
Verified Purchase
Cheryl
Houston, US
★★★★★ 5
Nice shelf!
Color: Black, Size: 2 in 1
I bought this shelf to put in the bathroom, I use it for putting wash cloths on the bottom shelf and a candle on the top shelf. It was easy to put together, and it was easy to hang. I did put polyurethane on the shelves, only so that, when I cleaned it, it would be easier to wipe. Everyone that sees it, likes it.
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Reviewed in the United States on July 8, 2025
F
Verified Purchase
Frank Olender
Lake Worth, US
★★★★★ 4
Very nice shelf for the bathroom.
Color: Rucstic Brown, Size: 2 in 1, Color: Rucstic Brown, Size: 2 in 1
The small screws that screw into the wood shelves strip very easily. Be careful. Had to use different longer screws. Went together fine.
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Reviewed in the United States on December 24, 2025
T
Verified Purchase
Tay
Draper, US
★★★★★ 5
Functional
Color: Black, Size: 2+1 Tier Size
Very functional and sturdy. The installation wasn’t bad at all, I used a level to assist. It looks great, and all my products look organized on it.
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Reviewed in the United States on June 21, 2025

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