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SDS Plus Shank Concrete Cement Stone Wall Hole Saw Drill Bit Set 30/40/50mm This product is made of fine metal material and carbide tipped, long-lasting to use.Specifications:Item type: Hole Saw DrillMaterial: MetalCarbide tip hole saw: 30/40/50mmLong shaft: 200mmSuitable for: brick, concrete walls, air conditioning openingsPackage weight: 1540g/3.39poundsPackage size: 200*150*60mm/7.87*5.9*2.36inchesPackage List:3 * Carbide tip hole saw1 * Long shaft1 * Drill bit1 * Wrench