Unique Design: In handicraft making textile processing and all kinds of scenarios where threads are used a quality plastic bobbin plays a vital role. It not only neatly organizing threads but also ensuring convenience and smoothness during the usage process Package Included: 20pcs black empty plastic spools. Size: bobbin: 2.8x5.8 cm/ 1.1x2.3 inch backplane: 6.4cm/ 2.5 inch in diameter 2.5mm thick hole: 2.5cm/ 1 inch. Enough quantity can meet your needs and you can also share with your family and friends Quality Material: These black ribbon spools made of quality plastic material fine workmanship lightweight and durable can be used for a long time. The surface of these empty spools are well polished will not damage your wire easy and comfortable to use Easy to Use: Hold end of the thread against the flat part then begin to wrap around the middle. Ideal for using sophisticated knitting techniques to keep the threads together and prevent knot saving space for your home making your handicraft creation more organized Application: Empty thread spools can be used to hold thread twine bobbin cord wire etc. Great for all kinds of strings wires elastic threads decoration chains cord etc. It makes your strings and chains less messy and can save some room for your desk