The Maxi-Lock Cone All-Purpose Thread is ideal to use for a variety of sewing projects. This highly durable thread is made of 100 percent polyester for the serger and other regular sewing machines. It's designed to endure high speeds and tension in the sewing process. Each spool of this sewing thread will be a great addition to your sewing kit. Ideal for light to medium-weight structured fabrics, overlock sewing projects, and standard & blind stitch hems. Maxi-Lock is made of 100% polyester, has a TEX of 27, and provides excellent seam strength. It is both shrink and abrasion-resistant, as well as mildew and UV-light-tolerant.