Each Silk Mill Set is a carefully selected group of silks based on a particular theme. The colours included in each set are also available individually if you find you need more of any particular shade. Each skein consists of 6 strands of pure Chinese silk, each strand being 6.5 metres/7 yards long, the whole being wound into a single skein. The strands can be used individually, or in any combination (2, 3, 4, 5, or 6) that best suits your purpose.