Description: Easy to use: the yellow cylinder of the bobbin winders is to fix the bobbin to the bobbin winder, hand crank operation, easy and fast to accelerate winding thread, bobbin rings can help you store easily, no more messy loose threads around. Metal Clip Ring: Use the ring to keep the plastic bobbins neatly organized at all times! Wide applications: the floss bobbin with bobbin rings help you to store and classify thread, you can use it when doing cross stitch, needlecraft, embroidery, DIY craft, or other sewing work, make your job easier and more convenient. Convenient Classification: You can store threads of multiple colors in a more efficient manner. Use a marker to write on the bobbins so you immediately know what color it is. About material: the floss bobbins and floss winder are made of plastic, bobbin rings are made of stainless steel, sturdy to use, not easy to break and deform, very convenient to handle and long-time usage. Specification: Bobbin Winder Size: 9.2x2.5cm / 3.62x0.98inch,floss Bobbins Length: 4cm / 1.57inch, Width: 2.7-3.7cm / 1x1.45inch,thickness: 0.1cm / 0.04inch Package Includes: 1 Set Floss Bobbins Organizer Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!