DEWALT DW4791 7-Inch Tile Blade High performance diamond matrix provides 200x's the life of conventional abrasives and enhanced material removal Thinner kerf to increase speed of cut while minimizing dust 8700 max RPM High Performnace diamond matrix provides long lasting and fast cutting of all types of tile and stone Wet cutting of all types of tile and stone Chip free cutting 5mm diamond segment hight Thin kerf to increase speed of cut while minimizing dust