15' 3.5mm Stereo TRS Male to 2 x 1/4" 1/4 inch 6.3mm Male Mono Left Right Cable Connecting between 3.5mm. stereo and 1/4in. (6.3mm left and right) mono connection types. Connecting speakers to portable audio devices, computer sound cards, and more. Connecting headphone to amplifiers and other home theater devices. 1 x 3.5mm Stereo male to 2 x 6.3mm Mono male Length: 15 ft