Description: The use of all metal chassis cavity, solid and durable, beautiful and generous. The power motor adopts 4 all-metal tooth motors (the motor of all-metal gear is noisy, but durable; the one with less noise is the mixed tooth of metal and plastic, but not durable). Metal motor has 1 minute 77 RPM /281 RPM /640 RPM for your choice, if not specified, the default delivery of everyone in general general torque 77 RPM The use of 80mm large diameter with the tip of high-quality inner tire, grip is very good, friction, can be outdoor rock crawler. The surface of the car cavity bracket with the steering engine interface, can support the steering engine, the car cavity can be placed in the battery box, motor driver board, MCU control board and other circuit modules. Specification: Material: Metal Color: Silver + Black Size: approx. 235x220x80mm/9.25x8.66x3.15inch. Size Chart: 1. Wheel diameter: 80mm 2. Wheel width: 60mm 3. Platform length: 235mm 4. Platform width: 220mm 5. Total height of the platform: 80mm 6. Weight of platform: 1180g 7. Distance from the chassis to the ground: 24mm 8. Rated voltage of the motor: 6VDC (6-24v can work) 9, the motor no-load speed: there is 1 minute 77 RPM /281 RPM /640 RPM for everyone to choose, if not specified, the default delivery of the general general 77 RPM torque motor. 10. Rated motor speed: 77 RPM 11. Length of motor gear box: 19mm 12. Motor rated current: 0.37a 13. Rated torque of motor: 26.8 mn. m 14. Motor maximum torque: 55.3 mn.m Package Includes: 1 Set Smart Car 4 Pieces Motor