**Mecanum Wheel Robot Kit - 4WD Omnidirectional Smart Robot Car Chassis Kit for DIY Robotics, STEM Education & Automation Projects**

I bought this barebones kit to acquire the wheel set mainly, but i was also interested in the TT motors. For the price and fast delivery, i felt it was worth it at the time. My main interest in the wheels is for a special project. i wanted to make sure that the small diagonal wheels on each mecanum wheel were not just a hard plastic. they are actually a type of pliable material, so they do have traction. i have yet to apply actual power to the motors, though i can rotate each motor axle with a wheel attached and i can hear the gears working properly. the assembly process was fairly easy. the tiny nuts and bolts that connect the motors to the small plastic pieces is about the most difficult aspect of the build. everything fits well, and i can tell that the motors will do their job. interesting to note, if you install the wheels in an opposite pattern to the instructions that are provided, the vehicle will be able to rotate (spin in place) freely. i suspect this is always true for mecanum wheels. this is probably not a desired configuration in most cases, which is why they included a simple printed diagram of how the wheels should be oriented to the vehicle. be aware that the eyelet holes for the wiring to each TT motor are very small. You will need a small tip for soldering iron to make a connection more permanent, though one might be able to just thread and wrap small wire.