Aunt Lydia's-Crochet Cotton Metallic: Size 10 Crochet Thread. This light weight lace is perfect for accessories and home decor! Weight category: 0. Content: 88% mercerized cotton/12% metallic 100yd/91m. Crochet Hook: 7/1.5mm. Care: machine wash dry flat do not bleach do not iron. Comes in a variety of colors. Each sold separately. Imported.