SZDoit Professional Smart Robot Tank Chassis, Remote Control Robotic Platform for Arduino Learning Kit, RC Crawler Robotics, Remote Control Tracked Car Caterpillar Chassis Mini TP100

Driving Wheel Parameters Name: Metal wheels Color: silver Material: Aluminum Type: with connectors   Tracks Parameters Name: Tracks Material: Engineering plastic Colour: Black Size: 4.5cm * * 78cm / stripe (about 100 joints)   Pacakge Included Tracks: 1 PCS Driving Wheel:  1 PCS Bearing wheel: 2pcs (4mm inner size) DC Motor: 2pcs Screws & tool: several 9V 150rpm with encoder motor parameters Name: 25mm DC carbon brush motor (with Hall sensor code disc) Output rate: 150 ± 10% rpm Load current: 200mA (Max) Stall current: 4500mA (max) Locking torque: 9.5kgNaN Load speed: 100 ± 10% rpm Load torque: 3000gNaN Load current: 1200mA (Max) Load noise: 56dB Working voltage: 9V Shaft extension size: 14.5mm Axial clearance: 0.05-0.50mm Screw size: M3.0 Shaft diameter: phi4mm, D3.5 Code wheel parameters: 2 pulses / turn Sensor working voltage: 3-5V.