Eagle 2.5mm Mono Plug to 3.5mm Mono Jack Adapter 3.5 mm Female to 2.5 mm Male 3mm 1/2 Headphone Audio Jack Signal MP3 Plug Connector, Part # 251125
3.5mm female mono jack to 2.5mm male mono jack adapter. Don't throw out those old headphones just because they don't fit your new MP3 player. Lifetime Warranty.
Retail Price: $1.19
Our Discounted Price: $0.32