Duro D115-22-ADMI-6.0 Steel & Inox Discs with Depressed Centre 115mm / 4½” x 6mm x5 Pcs This x5 piece set of Duro depressed centre grinding discs gives high performance when using angle grinders on all mild carbon steel and stainless steel types. FEATURES A30BF Inox Duo Specification Depressed centre - for grinding 80 m/s maximum speed 3 reinforcing layers Coated aluminium oxide - free of FE, S & CL <0.1% - EN12413 Appropriate for hand-held angle grinders SPECIFICATION Part Number: D115-22-ADMI-6.0 Diameter: 115 mm / (4½”) Bore: 22.23 mm Thickness: 6.0 mm