Description :

-This is a very basic double sided prototyping board with standard 0.1″ spacing with 4x3mm (0.16×0.12″) holes for mounting. The leaf pads make you great for quickly prototyping stackable circuits.
-It allows you to not only solder DIP components but also solder SMD components and you can solder the digital & analog IO pins and plug them into Arduino, so that the proto board can directly communicate with Arduino like a simple shield. See the following picture, a simple light water project with Arduino.

-Specifications:

•Compatibility: DIP & SMD components
•Mounting Holes:3x4mm (0.12×0.16″)
•Size:100x75mm (3.94×2.95″)