This pack contains 3 size 90/14 needles and 2 size 100/16 metal (metallic) needles. Metallic needles have a large eye (twice as long and four times as wide compared to a Universal needle) which helps reduce stress on delicate metallic threads when stitching. A light ball point helps reduce friction when stitching in dense patterns, such as embroidery. Favorite Uses: The perfect needle assortment for using metallic threads such as Sulky Original Metallic, Sliver™ and Holoshimmer™ The larger eye reduces stress and provides the additional needed room for the metallic threads, resulting in less breakage and smooth stitching. Needle Style: Machine