It used to be that they were all pretty much the same thing. Singer, as a company, has gotten sloppy. The Singer needles are not always consistent. I wouldn't use them, even in a Singer. I personally just use Schmetz or Bernina, which both have the 130 705H configuration. All brands of domestic sewing machines that we service, get a Schmetz needle to sew off with. That includes everything from a treadle to the big embroidery machines. The only exception is the Singer slant needle and some sergers.