This is a pack of (4) Kurrent Electric Brand cable for use with CIOKS and Eventide Power Supplies. These may not work with other types of power supplies. These fit typical boss style pedals DC barrel power inputs. If you're not sure if this will work with your power supply or the pedals you'll be using it with please message us. We'll do our best to help find the cables you need. These work great for powering multiple pedals using a single outlet on your power supply. Make sure the current draw from your pedals doesn't exceed the current available from your power supply's output. You'll need to add up the current draw from each pedal (see manufacturers website or manual for the specifications) to see what the total current draw will be. For example if you have three pedals each having a draw of 100mA your power supply's outlet will need to be able to provide at least 300mA or more. Also some pedals don't like to share an outlet and will be noisy. If you're experiencing noise you may need to move one of the pedals to it's own outlet.