I like the purple color:) It matches Maker UNO.This Aluminum Chassis in Blinka purple makes for an excellent robot body. It’s a single piece of bent 2mm thick aluminum, with a variety of holes, slots and cutouts for mounting boards, sensors, and servos. The sides are notched to fit two DC Gear ‘TT’ motors perfectly – There are four M3 and nuts are included for mounting the motors. In the front you can screw on a ball caster. You can build a very sturdy (and quite handsome!) little robot rover with this metal frame.Specifications:It’s made of aluminum so it’s light and strongThe anodizing is quite attractive as a mobile robot, if you use Maker UNO or Maker Pi RP2040, it looks awesomeCan be used to build a 2-wheel mobile robotTons of mounting holes & slots!You can drill and cut aluminum so it’s easy to modifyThere are ready mounting holes for Arduino UNO , and Raspberry Pi (though, for Raspberry Pi, there is some slight error).Note: This is a kit with loose parts, you need to assemble it yourself, DIY :)Then you will also need a microcontroller and motor driver that can drive the 5V DC motors. We recommend one of the followingArduino UNO, or Maker Pi RP2040 or Maker UNOMotor Control Shield (drives up to 4 motors), or Maker Drive, or H-BridgeRaspberry PiWhat’s in the box?1 x purple color chassis2 x DC Gearbox “TT” Motors (Yellow color)2 x “TT” Wheels (White Rim with Black Tyres, 66mm diameter, 15mm thickness)1 x Metal ball caster (metal ball, plastic holder)4 x M3, 25mm bolt nut (Mount “TT” to chasis)2 x M3, 6mm bolt nut (Mount caster to chasis, nut is not needed though)2 x 15mm self taping screw (secure wheel to “TT” motor shaft)ResourcesAssemble Aluminum Robot Chasis with TT Motor – Arduino CompatibleArduino on Aluminum Robot Chasis with TT Motor