From the manufacturer:
Susan Bates Silvalume Circular Knitting Needles are perfect for all your knitting needs. Silvalume needles feature anodized aluminum shafts which are dyed to pastel colors. To minimize weight and enhance stitching comfort, sizes eleven and up have plastic shafts. This package contains one sixteen inch circular knitting needle (needles are size seven). Cable is clear plastic. Measurement is tip to tip: two needles plus cable. Imported. WARNING: This product can expose you to chemicals including Di(2-Ethylhexyl) phthalate (DEPH) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov