This is a robot drive wheel we had made specifically for us. It does not have a bearing. Its 6 inches in diameter. 1.9" inches wide. Its a rubber pneumatic tube tire. The rim has a 4 bolt pattern so you can easily mount it to a flanged hub.
Inspect hard to reach areas such as crawlspaces and attics with this complete inspection robot package. New Anodized Black Chassis. Full of features including: DeWalt batteries, debris guard, roll cage, wheelie bars, and travel case!