This pre-wound thread bobbin pack is perfect for all your embroidery and sewing needs. Made with high-quality nylon, these bobbins come in style H and have a thread weight of Tex-90. The pack contains black thread with a spool size of 50 yards or less. The bobbin material is nylon, making it durable and long-lasting. With these pre-wound bobbins, you can save time and focus on creating beautiful designs. Ideal for use with embroidery machines or for hand-sewing projects.