Designed with a special scarf and large eye.Prevents shredding and breakage when sewing with metallic and other machine embroidery threads.Use with many decorative threads.Enjoy sewing with good needles!Made in Germany.Use with "Sewers Aid" on your metallic thread for less breakage.You can purchase "Sewers Aid" from Tiger Textiles.Combine that with the Schmetz Embroidery Needles to help your thread glide through your machine, smooth and with less breakage.