Set of 12 (twelve) 135 yard prewound bobbins, three each of the following neutral colors: white, black, cream and gray. WonderFil pre-winds 80 wt DecoBob™ thread on a reusable plastic bobbin; no glue or wax holds it together — which makes for happy machines! DecoBob is an ideal bobbin thread, since using a finer weight thread minimizes the bulk in your fiber project, yet DecoBob also has the strength, versatility, and reliability you can count on. Because DecoBob is a cottonized polyester thread, its matte finish will also help it blend into your fabric so that the bobbin thread shows less. These bobbins are wound uniformly, meaning you will get more consistency in all your stitches — which is especially noticeable when doing embroidery. They also come wound with a higher density of thread than when you wind your own bobbins on your home sewing machine. DecoBob pre-wound bobbins are available in 36 different colors, meaning you can find the perfect match to any project: choose below. To learn more about bobbin sizes, download the WonderFil Bobbin Guide »