Material These machine twin needles are made of high quality stainless steel with a durable plastic housing, providing sturdy and long lasting performance. Double needle design Each twin needle unit has two needles, allowing you to thread two identical or two different decorative threads. You can sew in a straight line or create patterns for a more decorative look, improving the overall appearance of your stitching. Sizes Available in three sizes: - 2.0/90 - 3.0/90 (for decorating bright threads, thick fabric trims) - 4.0/90 (for elasticated fabrics) Application Universal sewing machine accessory suitable for most sewing machines. No special machinery required beyond a standard compatible unit. Benefits and why you need it - Two thread capability in one pass: allows simultaneous use of two threads for decorative effects, saving time and reducing the need to re-thread between stitches. - Flexible thread options: supports both identical and contrasting decorative threads to enhance visual interest. - Versatile sizing: 2.0/90 and 3.0/90 are suited for bright threads and trims, while 4.0/90 is designed for elastic or knit fabrics, expanding your sewing options. - Reliable compatibility: designed as a universal accessory compatible with most sewing machines, enabling easy integration into existing setups. Use scenarios - Decorative topstitching on garments and home textiles: use two identical or two contrasting threads with 2.0/90 or 3.0/90 to add accent stitching or decorative lines in straight or patterned stitches. - Attaching trims or piping: run two threads to securely attach trim while adding a complementary or contrasting color for a finished look. - Sewing with elastic or knit fabrics: use the 4.0/90 size to accommodate stretch fabrics, helping reduce skipped stitches and maintain even tension.