Matching Bobbins & Thread - 24 amazing colors. Both top & bobbin thread is made of premium polyester fiber. The kit includes 144 bobbins (6 of each color) and 24 cones of poly thread cones (1 1100-yard cones of each color, to match the quantity of bobbin thread). Bobbins are 60wt thread and cones are 40wt thread Colors included in this kit from the ThreaDelight ™ Color Palette: