ChiaoGoo Twist 5" (13 cm) Interchangeable Set: All of our TWIST sets include 5″ (13 cm), surgical stainless steel, lace tips, and three cable lengths to make 24″ (60 cm), 32″ (80 cm), and 40″ (100 cm) circulars. TWIST red cables are memory free! They consist of a multi-strand, steel cable coated with red nylon. Also included with each set are easy-to-read, coded cable connectors, end stoppers, T-shaped tightening keys, stitch markers, a needle gauge, and a compact, zipper-enclosed, fabric case. TWIST & SPIN tips, cables, and accessories are all switchable!