Bosch Metal Cutting DiscBosch METAL CUTTING DISC 7 INCHSpecification: A 30 R BFDiameter: 180 mm (7″)Bore diameter: 22.2 mmThickness: 3.0 mmProduct Type: Cutting discBosch METAL CUTTING DISC 9 INCHHigh-quality aluminum oxide for long life and fast workBore size: 22.2mmMetal cutting disc 230x22.2x3