Here's some more data:
ISMACS says it uses 15x1 here:
http://www.ismacs.net/singer_sewing_...s-100-199.html
And on my needle packages you'll find this info:
Singer: 2020 (15x1), 2045 Ball Points
Schmetz: 130/705H 15x1H
Organ: HAx1 130/705H 15x1
Also a lot of folks will say to avoid Singer needles, or only buy Schmetz, or what ever their preference is.
>Schmetz is German and of excellent quality.
>Organ is Japanese and also of excellent quality, but some of their needles are made in China and other places. Doesn't seem to affect their quality.
>Singer needles are made in China, Germany and other places. I have personally had a few that weren't the best made. Overall I'd call them adequate.
Hope this helps and I'm not being to much of a smarty pants.
Joe