eBoot 2 Pack Headphone Adapter 6.35 mm (1/4 Inch) Male to 3.5 mm Female Stereo Adapter Plus 3.5 mm Stereo Male to 6.35 mm (1/4 Inch) Stereo Female, Gold Plated Adapter 1: 6.35 mm (1/ 4 inch) male to 3.5 mm (1/ 8 inch) female audio adapter Adapter 2: 3.5 mm (1/ 8 inch) male to 6.35 mm (1/ 4 inch) female audio adapter Connect headphones to audio devices such as amplifiers or AV receivers with 6.35 mm socket Suitable for a 6.35 stereo port to accept a standard stereo cable with 3.5 mm plug Scientific design, both adapters take 360 degrees grip treads which help easy to plug and unplug