Features:
High quality converter cable for guitar effect pedal.
Convert 5.5mm * 2.1/2.5mm to 3.5mm(1/8).
Supply power for electro-Harmonix, older DOD, and other guitar pedals that needs a positive tip 3.5mm (1/8) plug.
Works well with 9V 5.5mm * 2.1/2.5mm negative center power supply.
Length about 20cm.