“Works somewhat. The one I got seems to have a bad connection somewhere along the first half, si power doesn’t make it all the way to the middle. Other than that, ‘tis a breadboard.”
“Found I couldn't use this with the Pico with headers, as the holes are too small, also hard to push in LEDs, resistors etc with wire legs, as someone else has said, as they just bend. The mini-half-size breadboard works really well with all these components, not sure why this one has differently sized holes. Maybe the description needs to say which microcontrollers it's good for?”