ChiaoGoo's SPIN cables for interchangeable needles allow your tips to swivel freely!  They are made of a pliable, clear 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. Designed for use with SPIN tips, TWIST tips will also work with SPIN cables.

Available in six different lengths, there are two different connector sizes; choose small [S] for tips between 2.75mm and 5mm and large [L] for tips between 5.5mm and 10mm.

8in (20 cm) length can be used with 4in (10 cm) tips to make a 16in (40 cm) circular or connected to other cables
14in (35cm) length will make a 24in (60cm) circular when 5in (13cm) tips are attached
22in (55cm) length will make a 32in (80cm) circular when 5in (13cm) tips are attached
30in (75cm) length will make a 40in (100cm) circular when 5in (13cm) tips are attached   
37in (95cm) length will make a 47in (120cm) circular when 5in (13cm) tips are attached
50in (125cm) length will make a 60in (150cm) circular when 5in (13cm) tips are attached

These cables can also be used with TWIST tips.