Use these plastic thread bobbins by Opry to store different colours of embroidery thread in an organised manner. Write down the relevant brand, colour number and, if necessary, the yarn thickness on the bobbin: this way the correct shade can be found quickly and the yarn does not get tangled. Cut or already split threads can be knotted in the hole. The ends of the yarn can be secured in the indentations. You can store the thread bobbins with embroidery thread neatly in a box. These thread bobbins are made of durable, transparent plastic. One blister pack contains 20 pieces.