Magician Chassis with Motors and Wheel Encoder Kit for Arduino, Micro:bit, Raspberry Pi (4.33" x 6.89" x 3.15")Universal chassis for use with Arduino, micro: bit, and Raspberry Pi Features two gear motors with 65mm wheels and a rear caster Wide variety of mounting holes for microcontrollers, sensors, batteries, etc Kit includes all of the parts needed to assemble the chassis, a wheel encoder kit, as well as a 4xAA battery holder with wire leads (Batteries are not included) NOTE: The chassis requires assembly an illustrated assembly manual is included This