Always use these tightening keys to loosen or tighten ChiaoGoo’s cables to the interchangeable needle tips, connectors or end stoppers. Insert the tightening key inside the hole of the metal join and loosen or tighten the cable. If desired, use the keys in combination with ChiaoGoo’s heart-shaped, rubber grippers (item no. CG2599) to get a good grip. Available in two sizes: M for MINI TWIST cables and S-L for small [S] and Large [L].