U&U - level 4 - A brainteaser of the brand Huzzle, the new name of Cast Puzzle

The brain breakers of Huzzle Cast puzzles all have the same challenge:

Can you take the puzzle apart? And, do you get the puzzle back together?

Enjoy the beautiful quality of the metal product. Perfectly finished!

4 nuts and 2 u-shaped bolts... Surely that's how you split up, isn't it? Just not! Look carefully at each part of this puzzle and you might discover the trick!