The puzzle is to disentangle and re-entangle the parts of the 3d puzzle or brain teaser.
disentanglement puzzles
Intermediate Difficulty -12 Pieces Thicker Metal Algeria
Brain Teaser Puzzle Set of 3 Lock andUnlocking Brain Puzzles Kids
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Vintage H P Gibson Box of Metal Puzzles No.1 disentanglement
Set of 12 Metal Disentanglement Puzzles
Disentanglement Puzzles - Logica Puzzles
Metal Brain Teaser Disentanglement Puzzles - 2 Puzzles+Stand
Fantastic 5 Metal Brain Teaser Disentanglement Puzzle
GkGk Brain Teaser Toys, 6 Puzzles IQ Test Metal and India
Vintage Uncles Puzzles Pentagon Metal Disentanglement Puzzle Logic
HOME-X Metal Wire Brain Teasers for Adults and Kids, 4
Metal Wire Brain Teaser Set Of 16, Brain Teaser Iq Test
High Difficulty - 12 Pieces Metal Wire Brain Teaser - Assembly
Brain Teasers Metal Puzzles for Kids & Adult 22Pack