I have been riding this stayer bike for a one year now. Its a Gazelle bike from 1980. The original brochure is added to this post as well. The bike is re-painted and the frame has been made stronger with these metal inserts between the frame tubes. I don’t know who did this great welding job. The bike is light and the ride is stiff. The rear wheel is a Corima sandwich disk of Carbon. The gear ratio is 66 front and 16 rear. The front wheel is a 24 inch original Campagnolo stayer wheel.