I use this threader on 15 needle commercial embroidery machine. Works especially well when using dark thread in a poorly lit area. Since the needles are close together I use a little tube turner hook to grab the loop at the back of the needle and pull thread through.
I have always had trouble threading the needle of any sewing machine. I only recently learned of these little contraptions, and purchased this one. It works great just like it says
Another fantastic Dritz item! I love these, wish I would have known about them many years ago. Can be used to thread a machine or a hand needle, also one end of it has a insert to hold the needle when replacing it in the sewing machine, Incredibly easier to replace needles. The threader is easy to use but it will take a few tries to get the hang of it.