This Chassis kit comes with a red anodised aluminium Chassis, 1 Caster Wheel, 2 Wheels and 2 geared Motors. Easy to assemble, all you need to do is add your controller, motor drivers and batteries to have a rolling robot. The chassis is 155mm long, 74mm Wide, and 25.6mm tall (all +-1mm). The supplied wheels are 60 mm tall x 8mm wide. The kit does not come with standoffs for mounting any other hardware.