This is a 3.5mm headphone jack with standard 2.54mm header slots. All standard 3.5mm plugs for microphones or earpieces plug right in.

Features
• Material: Plastic + metal
• Mini design, portable and easy to use
• This breakout board makes it easy to add a TRRS jack to your prototype or project by breaking out each conductor to a standard 0.1″ spaced header.
• Lead to the left channel, right channel, ground wire, and the lines of the plug