This set of prewound bobbins is a must-have for any sewing enthusiast. With 144 pieces, you can be sure to have enough bobbins for all your sewing needs. These bobbins are compatible with Brother machines and are of size A, class 15, with plastic sides. They are manufactured in China to ensure high-quality standards. The bobbins come under the category of sewing machine accessories and can be used for various sewing projects. Whether you are a beginner or an experienced sewist, these bobbins are easy to use and will provide a smooth and efficient sewing experience. Get this set today and take your sewing game to the next level!