SE DW540 Diamond Wheel Set with Mandrels, Grit 400, 5-Piece (5) Diamond wheels; Grit: 400 Wheel diameter: 3/4"; Arbor: 5/64"; Thickness: 1/64" (2) Mandrels, shank sizes: 1/8" & 3/32" Includes black plastic storage case with a clear face For cutting metal, glass, stone, wood, etc