This is gold-plated 2.5 mm Female to 3.5 mm Male stereo converter. Some of the earphone plug is 2.5 mm, but most of the headphone plug is 3.5 mm. 3.5 mm is standard specification for earphone plug and usually used as basic audio socket in MP3 player, CDP or MD. So, it is practical.

Features:
Gold Plated great signal transfer.
100% brand new and high quality.
It is a really bargin and it is practical.
Easy to use.
Specification:
Length: 33 mm
Color: Gold
Package Size: 4.5 * 2.5 * 1 cm
Package Weight: 3 g / 0.1 oz

Package List:
1 * 2.5 mm Female to 3.5 mm Male adapter