Specification Brand : Osborn BulletPoint1 : Fill Material Steel BulletPoint2 : Wire Type Knotted BulletPoint3 : Shank Included Yes BulletPoint4 : Overall Length (Inch) 2-3/4 BulletPoint5 : Encapsulated No CompatibleMaterial1 : Wood CompatibleMaterial2 : Aluminum CompatibleMaterial3 : Alloy Steel ExternallyAssignedProductIdentifier1 : 0707326376207 ExternallyAssignedProductIdentifier2 : 707326376207 ItemName : Osborn - 1" Diam Knotted End Brush - 1/4" Shank Diam, 20,000 Max RPM ItemPackageQuantity : 2 ItemTypeKeyword : abrasive-cup-brushes Manufacturer : Osborn Material : steel Material1 : Nylon Material2 : silicon carbide NumberOfItems : 2 NumberOfPieces : 1 PartNumber : 00126615 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. Knotted brushes are made up of multiple filaments/wires bundled together to provide the most aggressive brushing action. ProductSiteLaunchDate : 2020-01-05T19:51:41.415Z UnitCount : 1