Features: 1.Each needle is equipped with two pins, you can easily hook out 2 same or different decorative threads. 2.The blue plastic needle tool is clearly marked with the size on it, which is easy for you to identify and access. 3.These double needles are made of stainless steel, which is not easy to rust and deform, and can be used for a long time. 4.The kit is equipped with a small plastic box, which is convenient for storing needles and avoiding incisive objects. 5.These double needles are good accessories for sewing machines, compatible with most sewing machines, and easy to thread and hook. specification:Item Type: Double Needles Pins : 3pcs Material: Stainless steel, plastic Size: Approx. 2mm / 0.08in, 3mm / 0.12in, 4mm / 0.16in Application: Use double needles to sew two-color stitches at one time. With double needles, two identical decorative threads can be sewn at the same time. You can use straight stitch or pattern stitch, or use 2 different colors of upper thread, which is more beautiful and beautiful. PackageList:3 x Double Needles Pins NoteDouble?needle sets for household multifunctional sewing machines, old?fashioned sewing machines, and industrial sewing machines are not available.