This is a robot drive wheel we had made specifically for us. It does not have a bearing. It's 10 inches in diameter. 3" inches wide. Its Pneumatic with a 4 bolt pattern so you can easily mount it to a flanged hub.
The Power Patrol SLA1165 battery is sized, tested and rated to meet exact manufacturer, OEM and safety standards. The SLA1165 gives you increased durability, superior performance, longer run times between charges and longer overall battery life.