TWIST cables are memory-free! They consist of a multi-strand, steel cable coated with red nylon. This 30? (75 cm) length will make a 40? (100 cm) circular when 5? (13 cm) tips are attached. Lifeline holes can be found at each end of these cables. Insert the T-shaped tightening key into the lifeline hole to assist with securing your tip/cable connection. SPIN tips will work with TWIST cables. Picture shows a 30" Small cable. Please make sure you are purchasing the Small, Large, or Mini cables that will work with your particular tip size - if you have any questions, don't hesitate to ask by phone or email!