The length specifications for the cables refer to the final length: cable and needle tips!
40 cm and 50 cm cables are used with short needle points (8,7 cm), the lengths 60 cm to 150 cm with normal needle points (11,5 cm).

These brown cables are specially designed for the GINGER needle tips.

Strong yet flexible, these cables have long threaded screws to guarantee a snug fit when joined with needle tips.
These also come with end caps that allow you to use cables as stitch holders, when needed.