This is a robot drive wheel we had made specifically for us. It does not have a bearing. It is 6 inches in diameter and 2 inches wide. It's a solid foam core with rubber treads and outer layer. The steel rim is painted black with a 4 bolt pattern so you can easily mount it to a flanged hub.
This is our prebuilt HD2 Mastiff robot with a 6 axis robotic manipulator arm. This robot is loaded with all the options and is ready to ship.
This is a fully assembled, second-generation LT2 robot platform. We use the same chassis in our tactical LT2. It's similar to our HD2 treaded robot, but it's lighter.