Chiaogoo's TWIST Interchangeable set includes tips made from surgical stainless steel. The lace tips range from US Size 2 thru US 15, and there are three cable lengths to make 24' (60 cm), 32' (80 cm) and 40' (100 cm) circulars. There are two sets of the cables included: one set for the smaller needles, and one for the larger needles. This results in having the smooth joins. 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.