Addi Click cord.
Addi Click is an ingenious system where you can combine individual cords and tips of various sizes as needed.
Both the classic Addi Turbo is available in a Click version, as are Addi Lace - in both a Short and a Long version.
The 40 and 50 cm cords are to be combined with the short tips.
The Click system can be purchased as a set or as single sets of tips and wires, so you can build your own set by little by little as needed.
See Addi Click Lace Short here
Addi Click Lace Long here
and Addi Click Turbo here