The KnitPro Cables pack consists of one cable, two plastic screw end caps and one Tightening Key.
The final cable length listed is achieved when needle tips and cable are joined together ie measure your circular needles tip-to-tip once joined to the cable. For example, if you want a 80cm circular needle, you would join a pair of 12.8cm regular tips to an Orange cable (which measures 56cm by itself) and that would measure just over 80cm. If you had the Special Short tips (which are 10cm long) your finished circular needle would measure approximately 76cm.
Blue: 50cm - 28cm cable makes 50cm
Neon Green: 60cm - 35cm cable makes 60cm
Orange: 80cm - 56cm cable makes 80cm
Red: 100cm - 76cm cable makes 100cm
Purple: 120cm - 94cm cable makes 120cm
Black: 150cm - 125cm cable makes 150cm
Note: if using the 40cm cable, it is recommended to use the Special Short KnitPro needle tips. Using Regular length tips will make the length from tip-to-tip approximately 46cm, but will also limit the angle you can get between the tips and may make knitting very awkward.