Acrylic 4WD Smart Robot Chassis

Including:

4*DC gear motor
4*wheels
1*4AA battery holder
4*20 line tachometer encoder
8*Fastener
1*3D assembly drawing
1*Several pillars screw nut
1*box

Only the above package content, other products are not included.

Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.