Iron Yarn Needles, Big Eye Blunt Needles, for Cross-Stitch, Knitting, Ribbon Embroidery, PlatinumSize: about 2mm in diameter, 70mm long.â 3 Sizes Available: Including 52mm, 60mm and 70mm. You can purchase according to your different yarn knitting needs. â Easy to Use: Due to the large needle eyes, the yarn can thread through the needle eyes easily. The blunt tip can pass through loosely-woven fabric smoothly and won't hurt you accidentally. â Usage: The yarn knitting needles are fit for finishing off crochet projects. They are also useful for fixing a jute rug or patching up vinyl upholstery and leather.