As  an avid sewer I prefer a strong, long lasting needle.  I use these in my sewing machine, serger, and embroidery machine.  Needles need to be changed regularly when sewing this much. I find these needles to be the most reliable in whatever size or type (wing, double, denium, leather, serger, or embroidery) I need. This holds trueof topstiching, ballpoint, and sharps also.  Of course I highly recommend this product.