Specification Brand : Osborn BulletPoint1 : Brush Diameter (Inch) 2-1/2 BulletPoint2 : Fill Material Steel BulletPoint3 : Filament/Wire Diameter (Decimal Inch) 0.0140 BulletPoint4 : Wire Type Crimped BulletPoint5 : Arbor Type Shank CompatibleMaterial : Alloy Steel CompatibleMaterial1 : Aluminum CompatibleMaterial2 : Wood CompatibleMaterial3 : Alloy Steel ExternallyAssignedProductIdentifier1 : 0707326108242 ExternallyAssignedProductIdentifier2 : 707326108242 ItemName : Osborn - 2-1/2" Diam, 1/4" Shank Diam, Steel Fill Cup Brush - 0.014 Wire Diam, 5/8" Trim Length, 4,500 Max RPM (8 Pack) ItemPackageQuantity : 8 ItemTypeKeyword : abrasive-cup-brushes Manufacturer : Osborn Material : Brass NumberOfItems : 8 NumberOfPieces : 8 PartNumber : 00221481 ProductDescription : Steel is the most common filament/wire material due to its durability and cutting action. It is suitable for general purpose applications and can be used on iron, steel, aluminum, brass, copper and wood. ProductSiteLaunchDate : 2020-01-03T04:10:23.751Z UnitCount : 1