Let me start by saying, this little metal cube has been a game-changer for my fidgety hands. As someone who constantly taps their feet or chews pens during meetings, the JOEYANK Infinity Cube gives my fingers something productive to do.

The anodized aluminum feels premium - cool to the touch with just the right amount of weight. It's not too heavy to carry around, but has enough heft to feel satisfying when flipping through its endless configurations. I keep mine in the included drawstring bag (nice bonus!) and toss it in my work backpack.

Where this cube really shines is its durability. After two months of constant flipping during Zoom calls and Netflix binges, the joints are still buttery smooth with no sticking points. The CNC machining makes each rotation crisp and precise - way better than those cheap plastic knockoffs that feel like they'll break after a week.

Now for some real talk: it does make clicking sounds when you flip it rapidly. Not super loud, but noticeable in quiet rooms. I've gotten a few side-eyes during intense work sessions when my fidgeting gets enthusiastic. Also, while you can technically use it one-handed, two hands works much better for complex flips.

The size is perfect - fits comfortably in my average-sized hands without being bulky. I love how it transforms into different shapes depending on how you rotate it. There's something oddly satisfying about watching it morph from cube to zigzag patterns and back again.

As an ADHD tool, it's been surprisingly effective at helping me focus during long reading sessions or video calls. The tactile feedback keeps part of my brain occupied so the rest can concentrate better. Bonus: my nail-biting habit has decreased significantly since keeping this on my desk.

Is it worth $20? If you're serious about fidget toys and want something that'll last, absolutely. Just know that like any toy, the novelty might wear off after a while - though mine still gets daily use months later.

Pro tip: If joints ever get stiff (hasn't happened yet), a tiny drop of WD-40 should fix it right up according to other reviewers!