Trust me Perry they are Pantiger sprockets, they were available for a short time along with metal wheels(painted tires)back in the day. But they(tankzone)just came out with similar wheels for the Panther G/Jagdpanther chassis that even have bearings..they look almost exactly the same as the old versionsexcept that they fit thethe different series tracks, which is why the old versions won't fit the newer style tracks..