These precisely-machined, lace tips are made of surgical stainless steel. The size is laser imprinted on each tip. TWIST™ tips can be used with SPIN™ nylon cables.Sizes 000 (1.5mm) – 1.5 (2.5mm) have a MINI [M] size join and work with our MINI [M] diameter cables. Sizes 2 (2.75mm) – 8 (5mm) have a SMALL [S] size join and work with our SMALL [S] diameter cables. Sizes 9 (5.5mm) – 15 (10mm) have a LARGE [L] size join and work with our LARGE [L] diameter cables.