Everybody talks about pedals, pedals and pedals. But no pedal, amp or whatever works without electricity. So you should think about a power supply that bringes voltage into your devices.
This one has got a special plug for special devices. Most of the older pedals have to be used with such supplys but there a some companies building effects that must be used with these ones, too. Such as Electro Harmonix.
It think it's long enough and the quality is good.
There are no scratches on the isolation of the cable and the pins on the plug are super straight. I've had no problems with it in the last few years of use.