This is a reverse polarity cable. if you want to use a Normaly Power Supply for a Gutair Pedel
One male plug and one female plug.
Plug Dimension: 5.5mmx 2.1mm . Cord Length: Total 26CM
Functions: to reverse the center Positive output to center Negative, or reverse the center Negative to center positive.
Reverse Polarity what you want, fit for keyboard and guitar effect pedal.
Note: Please make sure your cord end is 5.5×2.1mm compatible.
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