Pros : Catches glass when ccutting, catches most of the water when grinding
Cons : A little heavy, somewhat challenging to take apart when you have multiple grids setup.
Other Thoughts : i love these grid, when I'm cutting for long periods of time it saves me having to brush off my table. I like that they catch the small pieces of glass.
They are also handy under the grinder. However, if the grinder leaks or gets too much spray water goes between the grids and pools. I put a shower curtain down to protect the wood on my table.