These 3 inch (8 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 as well as regular TWIST cables. Tip / Cable Size Information: Tip sizes 000 - 3 use Mini Cables. Tip sizes 4 - 8 use Small Cables Spin & Twist cables are interchangeable (you can use Spin Cables with Twist Tips and vice versa).