This set includes 40 spools of polyester embroidery machine thread matched to common Brother colorways, paired with a two-layer clear plastic storage box. Each spool holds 500 meters of thread, the package also comes with free thread nets, a pair of yarn snips, a color chart. The two-layer storage box keeps all 40 spools neatly organized, stackable, interlocking design that locks each layer securely in place. Its fully transparent build lets you quickly spot the exact color thread you need from outside the case, each layer has 20 plastic pegs to hold spools upright and prevent them from shifting or falling out. The storage case fits both 500m and 1000m spools of embroidery thread, plus a wide range of mini sewing and embroidery thread spools from other makers. Available colors: 40 Colors, 60 Colors.