This 1/4" Stereo Phone Screw-On Adapter from Pearstone allows you to connect headphones that have a screw-on 1/8" (3.5mm) plug into devices that have a 1/4" (6mm) headphone jack. The adapter has a gold-plated construction to provide excellent signal transfer and to resist corrosion. The threaded 1/8" (3.5mm) adapter makes it ideal for use with headphones that use a threaded connection, e.g. Sennheiser HD280, Sony MDR-7506, Senal SMH-1000, etc. The gold-plated construction provides excellent signal transfer and resists corrosion The adapter can screw onto threaded 1/8" (3.5mm) plugs