You can use Schmetz or Organ needles. Mine came with Organ. I had never used them before, I had always used the Schmetz, but honestly, I like the Organ needles better. Not only are they less expensive, they last longer. It took over a year to use up the 10 that came with it. I would have gone through at least twice that many of the Schmetz.
These are the ones I use:
http://www.ctsusa.com/_e/Household_M...int_100pcs.htm