Description: Mechanical structure is simple, it is easy to install. This car is the tachometer encoder Two on the 5th battery compartment, convenient power throughout the system in a switch, while starting and stopping. No add-ins is very convenient, the entire system highly integrated Can be used to measure distance, speed Specification: Outline Size: 150x140x80mm/5.91*5.51*3.14" The round acrylic plate diameter: 130mm/5.11" Another acrylic plate size: 135x75mm/5.31*2.95" Package Includes: 1 x Round Acrylic Plate 1 x Acrylic Baseboard 2 x 65mm Wheel 2 x Universal Wheel 2 x Gear Motor 4 x "T"mode Fixed Motor Bracket 16 x M3X10mm Screw 8 x M3 Nut 4 x M3X12+6mm Copper Cylinder 4 x M3X30mm two-way Copper Column Note: Note: motor power supply is 3V~6V. All the parameter above is tested without load
