It’s not really a “cheese grater” but that’s become the company nickname for this tool.
Weight: .25 lb.
Part #: PD-2308
It’s really called a Surform Shaver by Stanley.
This is a quick and easy way to shape edges of PlasDECK. It is used to create a sloped or radiused edge around the perimeter of the decking which can then be roughed up with 40 grit sandpaper to blend with the PlasDECK texture giving it a natural, pleasing look and feel.