This is a chain drive 4WD base Programmable robot kit that uses 8" Nexus mecanum wheels allowing it to vector in any direction. It can support payloads up to 200 lbs. A great autonomous robot base. Formerly TP-158-004.
The HD2 tracked platform is a large, heavy duty tracked robot with the power to pull a truck and climb stairs. A wealth of internal space allows for batteries, controls and an optional computer. Customized version of item TP-200-001.