These DecoBob pre - wound bobbins are perfect for all your sewing and embroidery needs. Whether you're a professional seamstress or a hobbyist, you'll love using them. The size M bobbins are great for a variety of projects. You can use them to add beautiful details to clothing, make home decor items, or create stunning embroidery designs. Each pack comes with 24 bobbins, so you'll have plenty to work with. The 2 - ply cottonized polyester thread is strong yet lightweight, ensuring your stitches look great and your projects turn out beautifully.