Let’s be honest. These are not high quality protoboards. But, they’re cheap and they might just be what you need to quickly move a project from solderless breadboard to a more permanent solution. They are 5cm x 7cm, and have 432 solder pads on one side. Silkscreened labels of 01-18 and A-X make it easy to find the correct hole no matter which side you are looking at.
There are four boards per package.