- Assorted colored sewing threads, enough for your daily normal use. - These reusable bobbins can be used for new bobbins after the threads are finished. - Translucent and durable bobbin case, easy to see the color you need, great for organizing bobbins. - Color: 25 different colors. - Material: polyester thread, plastic bobbins. - Attention: There may be a margin of error of 1 to 5 mm due to manual measurement. Make sure you don't mind before buying. - Colors may vary depending on the screen. - A layer of film is attached to the bobbin to protect it, you can tear it off directly. - Package includes: 25 sewing thread bobbins (400 yards each) and 25 pre-wound bobbins (54 yards each).