★ 40WT, 100% polyester, 1000M/spool 6 spools/kit ★ 6 neon colors, makes embroidery work brilliant; white and black colors kit, ideal choice for most emboridery project ★ Perfect for embroidery machine speed at 600-800RPM; Please try to adjust the tension to make sure the thread works well with your embroidery machine ★ Suitable for most embroidery machines, such as Brother, Babylock, Janome, Kenmore, etc.