Attention all gears of gear are made of plastic. And since I have not found the bill, I tried the Internet on the search for spare parts side by Clatronic. Was then redirected to the page SLi24, have the images by e-mail to the sent with the request for an estimate for a gear. "The required spare parts for the Model FW 3506 is not available": answered was pretty fast. Oh great now I can just throw away the thing. Clatronic again, no thanks!