These floss bobbins keep your floss neat and organized. Each bobbin has the DMC logo, space for adding the floss color number and a cardboard knockout hole (if you want to use a metal ring.) Each bobbin holds one full skein of DMC embroidery floss. The size of each bobbin is approximately 1 1/8" x 1 5/8" (2.9 cm x 4.1 cm). That measurement is the width x height (the width measurement is from the center of the bobbin). The width of the end parts of each bobbin is about 1 1/2 in (3.8 CM)