Keep your sewing projects moving with the Dritz Class 66 Pre-Filled Bobbins. Ready to use straight from the pack, simply pop them into your sewing machine and start stitching. This set includes 12 bobbins—2 black, 2 white, and 8 in assorted colors—so you can choose the perfect thread for your project. When they run out, just refill with your favorite thread and keep on creating.