pony - Dafi Set of 5 Large Crochet Hook Sizes: 9mm, 10mm, 12mm, 15mm, 20mm for Chunky Yarn and Super Thick Yarn/Tricot/Recycled Yarn, Rag Rug This Set of large crochet needles made of high quality gray plastic produced by "PONY" The set is designed for knitters that crochet with thick yan and extra thick yarn, as tricot yarn or recycled yarn. Meets all the requirements of varied sizes of crochet large hooks. Comfortable hooks, especially in making rugs