Susan Bates Crystalites Knitting Needles are beautifully colored translucent plastic needles. Enjoy the smooth 'light as air' knitting experience in bright fun colors. This set contains four pairs of sequentially sized needles; U.S. 8 (5 mm), U.S. 9 (5.5 mm), U.S. 10 (6 mm) and U.S. 10.5 (6.5 mm).