The 8266BBA01 ESP8266 Breadboard Adaptor makes it easy to connect the ESP8266 to a breadboard or standalone for programming and testing. An 8 pin 0.1 inch pitch terminal is available in the bottom to directly connect to a breadboard.
An 8 pos screw terminal is available to get access to all the ESP8266 pins without soldering. A 2×4 socket makes it really easy to switch ESP8266 modules for quick testing and programming. (ESP8266 not included)