Review on Breadboard Solderless Prototype Male Female Female Female Computer Components by Todd Mohr

The products were shipped in a cardboard box. were defective. Protoblocks have double-sided foam tape on the bottom - the glue isn't very strong. The internal connector strips are very tight so they push the foam tape away from the bottom of the protoblocks when the component connectors are inserted into the holes on top. I would recommend installing the protoblocks on an aluminum or plastic board prior to use.