This floss bobbin is used to storage the remaining threads in embroidery, cross-stitch, needlework, and machine embroidery. Great to keep thread organized, untangled, and accessible. Wrap and store floss, needlepoint, and craft thread.SpecificationMaterial: PlasticColor: Multicolor, YellowBobbin Size: 40 x 36 x 1mm / 1.57 x 1.42 x 0.04" (L*W*H)Winder Size: 90 x 25mm / 3.54 x 0.98"(L*W)Packing List: 150 x Sewing Thread Organizer, 1 x WinderAdvantage1. Made of lightweight & reusable plastic, waterproof, and easy to carry.2. There are two line cards on each board, convenient for the end of the line to be stuck, and the line number can be marked for easy recognition.3. You can wrap the remaining embroidery thread on the winding board and keep it for the next use.