These 3" (5cm), 4" (10cm) or 5" (13 cm) precisely-machined, lace tips are made of surgical-grade stainless steel. The size is laser imprinted on each tip. TWIST tips can be used with SPIN nylon cables. *ChiaoGoo cables sold separately **When choosing a cable, please ensure that you choose the correct size that corresponds with the needle size. Small (fits ChiaoGoo needles size US 2-8)Large (fits ChiaoGoo needles size US 9-15)