Like Brain Teasers? Make this Simple Nail Puzzle

Looking for help solving a simple metal wire puzzle that I can't find the name of : r/mechanicalpuzzles

The Art of Metal Brain Teasers

Like Brain Teasers? Make this Simple Nail Puzzle

Mind Teaser Puzzle Printed with Logo

Four adults are left stumped by a simple brain teaser but how long does it take you to clock the mistake?

Puzzle and Perplex - Hard As Nails Solution

Guess The Saying Brain Teaser: Can You Guess The Well Known Saying From This Picture Puzzle? - News

Brain teaser goes viral: Spot the mistake in a 1-9 number sequence - how long did it take you? - NZ Herald

3D Wooden Game Puzzle - Brain Teasers IQ Fifteen Puzzle