The Brother Pacesetter Embroidery Sewing Thread Set consists of 63 spools and a white metal thread organizer. Each double snap spool has 1,100 yards of 40 weight 100% polyester embroidery thread. The double snap spools keep the thread from unwinding. The thread is specially designed and tested for Brother embroidery machines. You can use the embroidery thread with any embroidery machine. The white thread organizer is an attractive way to showcase the beautiful Pacesetter polyester thread color collection. It accommodates 60 mini-king and/or king size spools and can be a tabletop display or wall mounted. No assembly required.