“These replacements are what is needed to keep my Cetus printer functioning as the only failure I have had is the star wheel wearing and slipping, or should I say jumping, on the filament. This allowed the filament to stick in the feed tube of the nozzle making it look like the nozzle tip was clogged. I am very satisfied with the service but I did have some problems with the web site not responding properly to the browser back button. I kept getting sent to the shop in China instead of to the previous web page in the US shop.”