Item description from the seller

Item Descriptions:

3.5mm Female to 2 Male

- Gold Plated Connections for  Better Sound Quality and Less Loss

- Turns a 3.5mm Combo Headphone/Microphone Port into Two Distinct Ports

- Lets you plug in a single headset head plug into a dual female sockets

- Labeled jacks for Headset or Microphone

- One 3.5mm Headphone Jack and One 3.5mm Microphone Port

- Allows the Use of Older Audio Accessories with Newer Computers

- Designed for Use with PC Sound Cards, Portable CD Players, etc.

- The Headset Splitter Features a Compact and Sturdy Design to Deliver the  Perfect Solution for Applications That Requires Portability and Takes up Very Little Space in Your Laptop Bag

- Length: 0.3m/1m

- Connectors: 2 Male 3.5mm to 1 Female 3.5mm

- Fast Shipping From Sydney

Package Included:

- 1 x 3.5mm Mic/Audio to Aux Adapter (1 Female to 2 Male)