TWIST cables are memory-free! They consist of a multi-strand, steel cable coated with red nylon. This 37 inch (93 cm) length will make a 47 inch (120 cm) circular when 5 inch (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. Please make sure you are ordering the join size (Small, Large, or Mini) that will work with the tip size you have. If you have any questions, don't hesitate to ask!