Part No: WB1 Suitable for all domestic & industrial sewing machines. This needle threader is an exceptional tool for sewing work. The needle sewing aspect of the product is copper wire which is durable and with strong hardness so not easy to bend or not easy to break. it is a needle artefact. It is very easy to use. You simply thread the copper wire at the front end of the needle into the pinhole, thread the wire into the copper wire, and pull the wire of the needle puller out of the pinhole, and the thread is put on. It has ergonomic plastic grip handle for steady threading and an extra-long wire for anyone with poor eyesight or an unsteady hand. The product is suitable for both hand sewing and machine use, yarn, embroidery and cross stitch. Made in Taiwan.