Susan Bates Silvalume lightweight aluminum Double Point Needles are individually color coded by for quick selection. Double points are commonly used to create circular projects such as sleeves or socks. Special anodizing that etches away all surface impurities. Heat treated for strength and durability. Polished for a velvety smooth finish. Sizes are color coded. Great as a gift. Made of high quality aluminum, which are durable, smooth and conformable to use. Adopted with solid design, the knit needles are lighter and won't feel tired even for long-term use.