NEW DIY 2WD Motor Smart Robot Car Chassis Kit Speed Encoder Battery Box For Arduino

NEW DIY 2WD Motor Smart Robot Car Chassis Kit Speed Encoder Battery Box For Arduino

2 wd list:
12 mm copper column 14 PCS
30mm copper column 4pcs
Motor bracket and fixed screw: 4pcs
R1.5 mm screw: 40pcs
Decelerating motor 1:48 * 2
Wheel * 2
High precision 20-wire speed dial * 2
Fasteners * 4
Universal wheel * 1
4 battery box * 1