The MaxBotix low voltage MB1010 LV-MaxSonar-EZ1 offers very short to long-range detection and ranging, in an incredibly small package with ultra low power consumption. The MaxSonar-EZ1 detects objects from 0" to 254".
This prebuilt compact 4WD wheeled robot platform is equipped with 32mm motors, a motor controller, and Spektrum remote control. By default, the robot handles up to 5lbs of additional payload and travels 200 ft/min.
This is a set of wheelchair motors and make great heavy duty robot motors. One left motor and one right motor. They are right angle gear drives with a release and electric brakes. They are 24VDC and the operating speed is 150 RPM.