Small cables fit ONLY SMALL Twist and Spin tips. These do not fit mini or large needle tips, though an adapter to connect them to large tips is available.Twist cables are memory-free! They consist of a multi-strand, steel cable coated with red nylon. 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.NB: The length shown is the overall length of the needle once the tips and cable are connected. The 16″ cable is intended for use with 4″ tips, not 5″ tips. The longer cables can be used with either length tips but the overall needle length will be 2″ shorter than listed when used with 4″ tips.