Diane Twist-Flex Rods, Orange, 5/8" by Diane. $4.00. 5/8 inch diameter. 10 inches long. 6 per bag. Orange. Twist-flex rods are soft, flexible and lightweight rollers used to create curls. Available in a variety of lengths and widths to accommodate any hair type. No pins or clips needed. Ideal for speed setting. 10 inches long and 5/8 inches diameter. Orange. 6 per bag.