Heavy duty robot wheel with traction lug Tiller tread. It does not have a bearing. Size: 3.5-4. It's 10.5 inches in diameter, 3.5" inches wide. Its Pneumatic with a 4 bolt pattern so you can easily mount it to a flanged hub.
This is a Custom MLT-JR tracked robot platform, equipped with a pan and tilt camera for inspection purposes. It comes complete, a MLT-JR Tracked Robot Platform with PT Camera, LCD, Controller, 100ft tether, fully assembled and tested.