Hello, this is a gridfinity block to hold metal chisels in a thin toolbox drawer laying down flat. The gridfinity footprint of the block is 4x5, but I trimmed a little off of the back to fit into my toolbox drawer so it will have a small gap if you butt it up against another block. I could make another and eliminate that if someone requests it. This holds 7 metal chisels.

Enjoy