do you wear it on your finger?

Good God, NO! One, it's too big and two, it's strong enough to at least cut you, if not break your finger.

How do you know which direction north is?

hang it with a string. the side facing north direction is north pole. and side facing south direction is south pole.

Will this magnet detect magnetic rocks?

magnets attract materials that are iron based, if there is a rock with a magnetic flux they will attract each other. If you drag a magnet on soil you will find that it will attract the iron based materials (mostly in a powder form). I'm not really sure what you are asking, I hope this information is helpful.

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CMS Magnetics Super Strong Neodymium Magnets Ring N45 1-1/2"OD x 1.065"ID x 3/8" - Rare Earth Ring Magnet - Science Projects School and Magnetism Education

Product ID: 284419293

Details

Brand
CMS MAGNETICS
Colour
Silver
Material
Neodymium
Product dimensions
38L x 38W x
Shape
Round

🔩N45 Grade Neodymium Power

🧲38.5 lb pull force

🛡️Ni+Cu+Ni Triple Coating

AR$110302

Duties & taxes included

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Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧲 Elevate your projects with the magnet that means business!

UNMATCHED MAGNETIC STRENGTH - Experience a staggering 38.5 lbs of holding power that outperforms ordinary magnets.
DURABLE TRIPLE LAYER COATING - Shiny Ni+Cu+Ni finish ensures corrosion resistance and a sleek, professional look.
PREMIUM RARE EARTH GRADE N 45 - Harness the power of top-tier neodymium for long-lasting, reliable magnetism.
VERSATILE FOR DIY EDUCATION BEYOND - Perfect for science projects, home improvement, and innovative creative uses—don’t get left behind!
PRECISION ENGINEERED TO ISO 9001 STANDARDS - Tight tolerances (+/-0.002") guarantee consistent quality for your critical projects.

CMS Magnetics Super Strong Neodymium Ring Magnet (N45) delivers a powerful 38.5 lb pull force with a 13,500 gauss rating. Crafted with precision under ISO 9001 standards and protected by a corrosion-resistant Ni+Cu+Ni triple coating, this 1.5" OD rare earth magnet is ideal for professional DIY, educational science projects, and home improvement tasks. Engineered for durability and unmatched magnetic performance, it’s the essential tool for innovators who demand strength and reliability.

Specifications

ASIN	B01N02FJGQ
Best Sellers Rank	#253,999 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #347 in Industrial Magnets
Brand Name	CMS MAGNETICS
Color	Silver
Customer Reviews	4.7 4.7 out of 5 stars (368)
Item Dimensions L x W x Thickness	38L x 38W x 3Th millimeters
Item Thickness	0.38 Inches
Manufacturer	CMS MAGNETICS
Material Type	Neodymium
Model Number	NR0075-45NM
Number of Items	1
Number of Packs	1
Number of Pieces	1
Part Number	NR007-45NM
Pull Force	38.5 Pounds
Shape	Round
UPC	819060016148
Unit Count	1.0 Count

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