This is one of my favorite sewing tools ever invented. I give these as Christmas presents to all my sewing friends. And now you can get them here! Just put your needle in the little slot (eye down), lay your thread in the channel, press the button, and voila! Your needle is threaded. This works on almost every type of hand sewing needle, even those Japanese needles with the eeensy beensy eyes. Once you try this, you'll never use any other kind.