Brother Designio 50-Piece Embroidery Thread Set, SA650 PERFECT STARTER SET: Included are 50 spools of our most popular embroidery thread colors, in beautiful, rich tones to enhance all of your embroidery projects SUPERIOR QUALITY: This durable, high strength, high sheen embroidery thread is made of 100 percent polyester, which retains its color, heat resistance and strength for superior results IDEAL WEIGHT AND LENGTH: Each spool contains 600 yards of 40-weight embroidery thread, the recommend weight for home machine embroidery. The spools feature a unique double-snap design to help keep your thread from unwinding GENUINE BROTHER ACCESSORY: Specially designed and tested for optimal results with Brother embroidery and sewing machines FOR USE WITH: Brother and all brands of embroidery and sewing machines