Wide range of uses: double needles are good accessories for sewing machines, suitable for most sewing machines Exquisite design: each double needle is equipped with 2 needles, and 2 same or different decorative threads can be easily pierced and stitched in a straight line or pattern at the same time Easy to collect: These double double needles are equipped with a threader/elderly threader, and the storage box allows you to conveniently collect and store the double needles Durable material: The double needles of these machines are made of high-quality stainless steel and plastic, which are durable Packing: A total of 18 double needles, 2mm/0.08inch, 3mm/0.12inch, 4mm/0.16inch 3 different sizes, each size 6 Specification: Material: Aluminum alloy Size(L): Approx. Needle: 39mm/1.54 inch Package Includes: 18 Pieces Double needle of sewing machine 1 Piece threader 1 Piece Storage box Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!