Black 2x4x6 Fully Functional Cuboid by Calvin's Puzzle

This is a very well put together puzzle. It has quickly become my favorite puzzle in my collection. It turns very well. It doesn't fall apart in my hands at all, so I don't know what some of these other reviews are talking about. It does have a slight quirk with a couple of the corner pieces: some of them will slide off. It seems that the pieces are nothing more than caps for shorter pieces. It isn't an issue, but you could always mess with someone who wants to play with this puzzle. Overall, I love the build quality and puzzle design and would recommend this puzzle to anyone who has become proficient with other puzzles and would like a new challenge. Also, don't give this to a twelve-year-old.

It's a very good puzzle. I've been playing with it for I dare say 6 hours or so and I've had one piece pop. I put it back in and it was all fine and dandy again. It's incredibly challenging so for newbies this is a cube to avoid. It's interesting, to solve this cube because you have to solve it like multiple types of cubes at different times. All together, great cube and pro tip, don't give it to your 12 year old son.

This product is very cheaply made. My 12 year old son was playing with and and dropped it (slipped out of his hands) and crashed into a million pieces. We re ordered it and the pieces fell apart in his hands.

Difficult to solve but fun to figure out. Unfortunately this cube fell apart after 1 solve. (1day)

Excelente giro, recomendado!

Buen cubo aunque cuesta mucho girarlo, no es del mejor material

Very good

This is a great puzzle. Very difficult if your new to cuboids, I wouldn't start here. I would start with a 4x4x6 to learn the main concepts and then try to apply them here. The other review here says it's cheap and badly made but it isn't. Cuboids are not as tough as NxNxN puzzles like 3x3x3. They bandage and the mechanism is very complex, which means if you drop it, it will probably break ( i have dropped mine and it didn't break, I will try to not repeat dropping it though) . Also if it is dropped and pieces fall out they usually aren't broken, just need to be reinstalled. If you just solve it, it's amazing how well it turns for how complex this puzzle is. Great puzzle , great challenge.