This roller aims to create the tile pattern shown in the image on XPS foam or a similar material, using 2mm edges to cut a groove. It should be good for brickwork on buildings or stone paths.
The roller itself is just over 6 inches. The tile pattern is provided as a reference of what the roller should create.
The two marked NarrowCut have 1mm edges to cut grooves. Although it has finer edges to cut, it may not last as long.
The other two have 2mm edges like the Flagstone roller (https://www.thingiverse.com/thing:3178751 )