i juggle with midi and midi cables since 15 years and this is the most useful and surely definitive solution for cable management.
no ONE midi device has the midi plugs in the same mounting direction, so when you get a L cable bear in mind you are just lucky if the L goes the way you want.
straight midi plugs need a lot of real estate , and in a pedalboard you can be out of that space quickly. this is genial, you can plug the cable and just turn it the way you need it to go (obviously in the two direction possible, up or down, or left or right , depending how the midi plug on your device is mounted)
the best midi cable i foud until today. the only thing better would be a rotating cable-bender like the one mounted on this but 360 degree. that would be priceless.