SET OF 5 SPOOLS - brings you a set of 5 spools of polyester embroidery thread that come in beautiful colors to beautify and brighten up your projects. Color numbering is similar to Brother embroidery thread colors, to make sure thread matching is a little easier for you. HIGH STRENGTH - Our embroidery machine thread has excellent tensile strength which reduces the chance of breakage or fraying - less thread breakage allows you to complete your projects more efficiently and without frustration. The extended elongation of the polyester also helps eliminate the risk of curls and puckers. TANGLELESS SPOOL STORAGE - Perfect solution for damming wire ends and retaining wire tension, offer an innovative way to prevent unintentional unwinding of wires - eliminating any hanging or loose cord that could cause a mess. FASTNESS COLOR - Not only is strength important, but so is the color fastness of the yarn when it comes to chlorine bleaching or using harsh chemicals. Polyester is known for its ability to hold its colors very well compared to other yarns like rayon and is, therefore, a preferred choice of many because it does not easily shrink or bleed.