The Brother ETPBEST100 Embroidery Thread Set Best 100 Colors includes the top 100 best selling colors in the Brother thread line.  The Brother ETPBEST100 Embroidery Thread Set Best 100 Colors is 100% polyester thread in 1000m spools.  Check out the colors incuded in the Brother ETPBEST100 Embroidery Thread Set Best 100 Colors and you will not need thread for a long time.