Save time by using Drtiz® pre-filled bobbins. These bobbins come pre-filled with 50 yards of washable and dry clean safe, colorfast, size 50 thread. Assorted colors include pink, black, gray, ivory, blue, light blue, green, red, brown and white. These bobbins are also great for quick hand sewing, just thread the needle right from the bobbin. Each package contains 12 bobbins.