This 6.35mm 1/4 inch male to male mono audio coupler is specially designed for guitar effect pedal linking. Adopts standard 2-pole mono structure, matches most guitar pedals, amplifiers and stage audio equipment. Premium gold plated connectors effectively resist oxidation and reduce signal interference, delivering pure clear tone. Mini portable size greatly saves space on your pedal board, easy to assemble and replace. Widely used for connecting multiple effect pedals together, ideal for guitar players, band performances and studio audio setup.