Can you use this magnet to guide a metal plumbob inside a wall to a predrilled hole for fishing electrical wire from basement to attic?

If any metal in the wall it will stick to it. This is a very strong magnet and you may lose it in the wall if you use a cheap string...

Are you supposed to add thread locker?

If on fishing line you should not need to. I don't know why you would need to remove the ring from the magnet housing, but you could add some thread-lock.

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DIYMAG Strong Neodymium Fishing Magnets, 300 lbs(136 KG) Pulling Rare Earth Magnet High Power with Handle Diameter 1.97 inch(50mm) for Retrieving in River and Magnetic Fishing

Product ID: 585641386

Details

Brand
DIYMAG
Colour
Silver
Material
Neodymium
Product dimensions
50L x 50W x
Shape
Round

🧲300 lbs pull force

⚙️50mm diameter heavy-duty steel base

🛡️Triple-layer rust-resistant coating

¥4855

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧲 Reel in the impossible with power that sticks around!

BUILT TO LAST - Triple Ni+Cu+Ni coating ensures rust-free, scratch-resistant durability
PRECISION DESIGN - Magnetic force focused solely on the base for targeted, efficient pulls
VERSATILE UTILITY - Perfect for fishing, lifting, suspension, and industrial recovery tasks
PERMANENT MAGNETISM - Rare earth neodymium core guarantees lasting strength for decades
UNMATCHED MAGNETIC POWER - 300 lbs (136 kg) pull force for maximum retrieval reach

The DIYMAG Strong Neodymium Fishing Magnet delivers a powerful 300 lbs pull force through a 50mm steel base, enhanced by a triple-layer Ni+Cu+Ni coating for superior rust and scratch resistance. Designed for precision magnetic fishing and heavy-duty retrieval, this rare earth magnet maintains permanent strength over decades, making it an essential tool for professionals and hobbyists alike.

Specifications

ASIN	B0BDFJWGWY
Best Sellers Rank	#2,358 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Industrial Magnets
Brand Name	DIYMAG
Color	Silver
Customer Reviews	4.3 4.3 out of 5 stars (2,475)
Included Components	no
Item Dimensions L x W x Thickness	50L x 50W x 52Th millimeters
Item Thickness	2 Inches
Item Weight	0.18 Kilograms
Manufacturer	DIYMAG
Material Type	Neodymium
Number of Items	1
Number of Pieces	1
Part Number	NCN50-1P
Pull Force	300 Pounds
Shape	Round
Unit Count	1.0 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥4855

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Good experience, but the tracking updates could be better.

2 months ago

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