SUSAN BATES-Silvalume Double Point Knitting Needles. Silvalume needles have the widest range within the Susan Bates family of knitting needles. Made from lightweight aluminum, each Silvalume stylus undergoes a special anodizing process that removes all surface impurities. Additionally, each needle is heat treated for strength and durability and polished to a velvety smooth finish. These 7-inch needles come in a pack of four and are available in US sizes 0-8 - each sold separately. It comes in a variety of colors. The color is chosen at random and cannot be selected. Imported.