Each spool has 50m of the best quality French silk money can buy! Au ver a Soie 100/3 is a luxurious French silk thread and perfect for hand applique, hand embroidery, piecing and quilting. Wouldn't it be nice to own a thread collection that serves all of these needs? In the long run, that is also very helpful to your budget as well! Furthermore, there is not another thread collection out on the market today that has this range of colors.