Product name: Tile positioner lmm, 1.5mm: Used for polishing bricks and fully glazed, microcrystalline stone and marble bricks 2.0mm: Used for wall tiles 2.5mm, 3.0mm: for small size tiles 4.0mm, 6.0mm: for medium size tiles 8mm, 10mm: for large size and outdoor bricks Three uses of the tile cross: The flat insert type is parallel to the tile Vertical type is perpendicular to the tile DIY can also do diy T type use