Sets include 4″ (10 cm) sizes 2-15 US (2.75-10.00 mm), surgical-grade, stainless steel, lace tips and four Twist "S" and four Twist "L" cables to make circular sizes: 2x8" (20 cm), 14" (35 cm), and 22" (55 cm) cables to make 16″ (40 cm), 24″ (56 cm), and 32″ (76 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 compact, zipper-enclosed, fabric case. TWIST & SPIN tips, cables and accessories are all switchable!