Car chassis with 2 wheels x2

Model: DIY-2WD-2.
Kit to assemble your own robotic car. The structure is made of highly resistant transparent acrylic.
The mechanical structure is easy to assemble and comes with instructions included. It includes holes in the chassis to add the control board (Arduino or microcontroller), drivers for DC motors and sensors. Included in the kit are wheels for encoders that can be used to sense the speed of the robot. The chassis is large and easy to expand.
Wheels
Rim diameter: 66mm.
Rim width: 26mm.

kit includes
2 base plates
2 wheels
2 geared motors
2 x wheels for speed encoders (Does not include photodetectors or optical encoders, can be purchased separately)
4 engine mounts
2 idlers
4 30 mm copper supports
4 30mm round head screws
8 pillars of 8mm
8 16mm pan head screws
4 8mm round head screws
18 nuts
1 AA battery container (batteries not included)