The Dolder Bar and Sleeve System is premade in gold alloy or titanium. Two configurations are available, resilient or solid. The Dolder Bar System is the oldest in use today and was designed by Prof. Dolder in Switzerland. The resilient Dolder Bar allows for vertical and rotational resiliency, while the solid may be processed with some vertical movements only. The standard bars have a ø of 1.6mm and the wide have a ø of 2.2mm. The gold bar must be soldered to precious alloys while the titanium bar is laser welded. If your prescription requests a non-precious alloy, refer to the plastic CBS Oval Bar.