Specification Brand : 3M BulletPoint1 : Sale Unit: CASE (DISC x 25) (DISC x 25) BulletPoint2 : Brand: 3M BulletPoint3 : Abrasive Type: Coated BulletPoint4 : Disc Diameter: 4 in BulletPoint5 : Abrasive Material: Aluminum Oxide CompatibleDevices : Angle Grinder ConstructionType : Coated ExternallyAssignedProductIdentifier1 : 051144201044 ExternallyAssignedProductIdentifier2 : 0051144201044 IndustryStandardIdentifier : Backing Pad ItemDisplayWeight : 0.08 pounds ItemName : 3M 381C Coated Aluminum Oxide Brown Fibre Disc - Fiber Backing - 80 Grit - Medium - 4 in Diameter - 7/8 in Center Hole - 20104 [PRICE is per CASE] ItemPackageDimensions_Height : 17 centimeters ItemPackageDimensions_Length : 14 centimeters ItemPackageDimensions_Width : 1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : fiber-backed-abrasive-discs Manufacturer : 3M Material : Aluminum Oxide MaximumRotationalSpeed : 15000 rpm ModelNumber : 63642527531 NumberOfItems : 25 PackageLevel : unit PartNumber : 60440205593 ProductDescription : 3M coated 381C fibre disc uses aluminum oxide as the abrasive material and has a diameter of 4 in. 3M incorporates this aluminum oxide material into the fibre disc forming a grit of 80. All abrasive products that rotate or spin, such as the ones in this category, have a maximum speed at which you can run them. This 3M fibre disc can be run at a maximum speed of 15000 RPMs. ProductSiteLaunchDate : 2012-02-01T15:35:19.031Z Size : 3 x 36g coarse