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 135 RPM.
This is a MLT-42-F tracked robot platform and is equipped with flipper arms, 42mm motors, a motor controller, and Spektrum remote control. This rugged robot platform the treaded robot handles up to 15lbs of additional payload and travels 200ft/min.