This DeWalt Diamond Multi-Material Cutting Disc (DT20590-QZ) is 76mm (3") in diameter with a 10mm bore size. It is suitable for cutting a wide range of materials including drywall, cement boards, PVC/Plastic, fibreglass & metal. This disc is designed for use with the DeWalt DCS438 Cut Off Saw. The maximum operating speed is 80m/s. Product is part of the DeWalt Cut Off Saw Discs range and is manufactured in Vietnam.