Review on ROKR Adults Mechanical Kits Brain Puzzles Vehicle Kits Unique Puzzles for 3-D Puzzles by Lild Zimmerly

Most of the pieces don't fit together easily, you have to grind a lot or use a lot of force. It's quite difficult to determine in advance which part needs sanding to fit without using force, so I ended up breaking two parts before moving on to phase 3. I was able to fix the first broken piece with glue, but I can't do anything with the second piece because not only is it broken, it's stuck and won't go any further than it should. So basically it's $20 down the drain and the frustration of not being able to see the finished product. I'm just glad I didn't order one of the more expensive ones right away!