Aunt Lydia's Classic Crochet Cotton Thread Size 10 Article 154 is the most well know crochet thread on the market today. This high luster mercerized cotton crochet thread is perfect for crochet projects both large and small. This thread is available in a wide range of fashion solids, neutral basics and alluring multi-colors that are ideal for home decorating and fashion projects. Article 154 is a size 10, bedspread weight, 3ply 100% mercerized cotton thread.