Specification Brand : APD-Incorporated BulletPoint1 : Aluminum oxide is durable and the most common abrasive grain BulletPoint2 : Type 27 depressed center wheels are used for cutting off and portable grinding BulletPoint3 : Reinforced design helps provide safety, strength, and straight cuts BulletPoint4 : Resin bonds soften under the heat of grinding, releasing dulled abrasive grains BulletPoint5 : Depressed center wheel for use with right angle grinders, or angle grinders, without gouging the workpiece CompatibleDevices : Angle Grinder ConstructionType : Coated ExternallyAssignedProductIdentifier1 : 748904338804 ExternallyAssignedProductIdentifier2 : 0748904338804 IncludedComponents : Grinding Wheel IndustryStandardIdentifier : Type 27 ItemName : 4-1/2X1/4X5/8-11 NORTONMETAL Type 27 DEP Center ItemPackageDimensions_Height : 11.7 centimeters ItemPackageDimensions_Length : 6.3 centimeters ItemPackageDimensions_Width : 10.9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : surface-grinding-wheels Manufacturer : APD-Norton Distributor Material : Aluminum Oxide Material1 : resin Material2 : stone Material3 : steel MaximumRotationalSpeed : 13300 rpm ModelName : 730002 ModelNumber : 730002 NumberOfItems : 20 PartNumber : 66252843605 ProductDescription : Features: Made of high quality material, wear resistance, long service time. Designed to grind carbide and hard steel, stone, metal and other processing and polishing. Resin for uncomplicated grinding operation with good material removal rates, while maintaining a low thermal influence on the work piece. Mainly used in alloy knife, saw blade, saw tooth processing and grinding. Can processing tungsten steel, quenching processing steel, special hard brittle materials grinding. Specifications: Material: Diamond, Aluminum alloy, Resin Binder: resin grinding wheel Grit: 180# Shape: bowl shape Process: sintering Outer diameter: 100mm/3.9in Bore diameter: 20mm/0.8in Package Weight: 250g/8.8oz