The basics Clover Needle Threaders take the frustration out of threading needles! The benefits Made with super fine steel wire. Each end has a cap to protect the wires. The uses Insert the wire into the needle eye and push the needle completely to the end. Pass the thread through the wire and gently pull the needle off the wire. The bottom line Double New Version-One end is for large needles and sewing machines and the other is for small needles.