Please check carefully about the products, Option 1: 3.5mm (Male) 2.5mm (Female) Option 2: 2.5mm (Male) 3.5mm (Female) Features: Convert a 3.5mm stereo audio jack to a 2.5mm jack. This adapter allows you to use headphones and audio cables with 2.5mm connectors with devices that have a 3.5mm jack. Gold plated connectors provide optimal signal transfer. Connectors: 3.5mm Male to 2.5mm Female (2.5mm Male to 3.5mm Female ) Length:approx 34mm Diameter:approx 7mm Package Include: 1 x Audio Plug Adapter