Easy to assemble, comes with bunch of screws, SG90 servos and motor plastic parts.

My suggestion is make a how to videos. The information at book are very valuable, but lots of people needs deeper desctriptions. We want experience videos! :) When you add some videos I will update my review from 4 stars to 5 stars. Thanks:)

Are there any other deal for Bipolar model? Not unipolar.

The motor is cheap and strong. What's more? :)

I am using this at Robot arm. 4 screwed hole makes easy to connect to any joint.

The motor's torque is higher than usual. And resistant to impacts which is Ok. But my main problem is fitting to 5cm for minisumo. I had to cut motor's shaft nearly half.

I am using them with my 12mm old pololu motors. They are superb. They stick to surface very well. Also I had similar silicone wheels but these are best that I can say easily.

First of all, the code that they send is very easy to understand, it needs little tweak. I am developing with my students. Chassis is very rigid. The board is very easy to learn and can be added more sensors (which is good for future improvements). The design and speed of robot gives you a high-quality robot kit feeling. Also very powerful. We will see at our competition. I recommend to all robot competitors. starter.

Best wheels for sumo robots! Before we were using lynxmotion sponge wheels, but this wheels jumped robot's power to very high level. No need to extra universal hub. They fit directly to our titan 1000 rpm motors.

I use it 4 wheel line follower, they track the route great. And stackable design is very usefull. I tried 3-3 wheels at each side, but unfortunately it made a little weight (traction and manuevering is increased where as)