Made of durable cotton and polyester, combining the advantages of both materials, this thread set provides more comfortable and natural feelings to your clothing and quilts. These spools are great for all purpose sewing projects from beginner to professional and are ideal for Brother, Babylock, Janome, Singer, and other sewing machine with automatic winding.Details:Includes assorted colors1000 yd.5 spoolsMixed cottonFor use with sewing machines with automatic winding (sold separately)