Engino- STEM Toys, Mechanics Gears & Worm Drives, BuildingToys for Kids 9+, Engineering Kit, Educational Set, Gifts for Boys & Girls, STEM Projects, Fun Activities for Kids (12 Model Options)

I was hesitant at first because there weren't many reviews for or against, but I purchased the ENGINO-Stem Mechanics Gears and Worms set for our 9 year old grandson and he loved it. He is into anything with gears and STEM related that is creative, sturdy, makes more than one project within a box, and actually works; this was a hit! It also arrived very quickly, in great condition, and will be enjoyed for a very long time. I will most likely be buying some of the other sets available from ENGINO-Stem so that he can learn about other mechanics and build even more.

Fabulous kid experience with clear dirctions on how to build the several illustrated structures. Great physicas esson embedded!!

My 9 yo son is having fun building each item and seeing how they work.

Great toys for a eight years old. Need help of an adult

My nine year old son loved this. It took him a couple hours to build the crane, he did it without help. He learned about gears and drive shafts, and loved every minute of it. Great gift!

Why did you pick this product vs others?: I bought this for my grandson and he loved it.

Solid, fun project for my 11 year old. He had a blast. The instructions aren't great, but when you are comparing to Lego instructions, is anything really that great? Would definitely buy this again.

I bought this kit last year for my son who loves building kits (K'nex, LEGO, Snap Circuits, etc.). It looked so cool, but we were not especially impressed. The machines built by this kit are surprisingly large, which was great. For the most part, the pieces were easy to snap together. My 9-year-old was easily able to follow the instructions and build independently. The structural pieces were nice and sturdy (similar to the pieces in the Thames & Kosmos Catapults & Crossbows in size and feel), but the bars doing the mechanical work were really flimsy. These are slender pieces of black plastic used to transfer force from the handle to the gears that move the machine. On the relatively compact lift design, getting this skinny piece of plastic into place and making it turn were tricky enough, but the helicopter relied on several of these twiggy pieces connected by sliding the end of each piece into a connector. You had to get them in about equally in order for them to be held securely; if you got one in too far, it was really hard to tug it back out again (even for me). These flimsy pieces were what connected the crank at the back of the helicopter with the gear that turned the main blade. It was hard to get them turning, and they twisted under the strain of connecting the handle and the gear. Because of the flimsy nature of the construction, the mechanisms on both machines didn't always work: the teeth would jam, and you'd be afraid of snapping the black bar if you exerted too much pressure trying to wiggle them free. I was hoping these would be a step up from K'nex educational kits; the educational materials were great, but the mechanics were disappointing enough that my son built only these two models and never wanted to touch the set again. (This from a kid who has built and re-built all of his other building kits sets was a pretty big disappointment.)

My son loved it, it’s easy to built, instructions are very clear and pieces are good quality

Excellent for a youngster with engineering ambitions

muy bonito y didactico, a mi sobrino le encanto, lo unico es que las instrucciones vienen en ingles y el aun es muy pequeño, pero todo lo demas bien

Llegó a tiempo, en buen estado. Es un producto didáctico al 100%. El material de los bloques es bueno y el de los ejes no tanto porque se doblan un poco si se manipulan mucho. Sin embargo, son más las ventajas del producto.

I bought this for Christmas to my nephew (he's 7) and he loved it: it was challenging but not complicated and managed to do it all by himself. Nice gift :)