Ummmm, not sure....I have organ titanium, schemtz, pfaff, older singer needles (depending on which machine I'm using) and so far have not had a problem. I do know we have to be careful and change them after so many projects as the piercing power diminishes after awhile depending on what we're working on. The titanium needles are supposed last longer. You can go to Superior Threads and learn a lot about needles, what size to use for particular thread, etc., and possibly help you if you are having problems with yours. That is a really great site to help any of us learn about threads, needles for various projects and so forth.