Addi Turbo 12" Circular Knitting Needles: Addi Turbos are a marriage of brilliant engineering with every knitter’s dream. Addi’s breakthrough design features a hollow brass core that offers strength and very light weight; the nickel plating provides the smoothest ride possible for your stitches; and addi’s cable is the one that raised the bar for everyone – – here at last is a cable that is flexible, strong and never coiled or kinked. Sizes range from US 0 through US 9. The perfect size for knitting newborn hats! Lifetime guarantee against manufacturers defects.