Perfect for connecting pedals from the same manufacturer, with inputs and outputs at the same point. It's a very well made, sturdy bit of kit which will pass the signal through with no unwanted noise. For connecting different brands of pedal you're better off with the Z connector but for me, I use this to go from one EHX pedal to another and it is ideal. Using this takes up less room on the pedalboard so it is perfect for my compact setup. For those using larger boards, switching to these will not only save you from the clutter of excess patch cable, it could also leave space for another pedal.
This is good but I wish they did one with a smaller bit in the middle. It is too big and makes unnecessary gaps between pedals, if it was smaller it would be much better. Sound quality is perfect thought and it will probably last forever so it is worth the four stars.