A cable with a 2.1mm straight barrel and a straight 3.5mm mini plug with standard (tip positive) polarity. The 3.5mm mini plug cable connection is compatible with older/vintage MXR, DOD, Electro-Harmonix, Pro-Co (Rat series), Klon Centaur, and vintage (non-LED) Voodoo Lab pedals.
Power Supply Connector:    2.1mm Straight Barrel Plug
Pedal Connector:    3.5mm Straight Mini Plug
Polarity:    Standard (Tip Positive)
Length:    18 in / 46 cm