Specification Brand : Norton BulletPoint : Twist on and twist off in 2-1/2" turns^Disc locks securely to back-up pad, but is easily removed^Rubber threaded hubs BulletPoint1 : For manual or mechanical applications. Can be mounted in fixtures, chucks or cradles. Dependable for automated operations. BulletPoint2 : Grit Textures: Each Cratex size and shape is made in four standard grit textures or compositions which differ in accordance with the mesh size of the abrasive grain used. Coarse (Green) Medium (Dark Brown) Fine (Reddish Brown) and Extra Fine (Grey Green). BulletPoint3 : Use them for polishing shafts...damaskeening...cleaning and dressing diamond wheels...polishing rotating cylindrical parts, cleaning calibrations and reference points, and for removing feather edges and touching up cutting tools, dies, chisels and other sharp edged tools. BulletPoint4 : Cratex Blocks and Sticks are excellent hand tools for cleaning and polishing metal surfaces, for breaking edges, smoothing away high spots, removing rust, heat marks, tarnish and stains CompatibleMaterial : Rubber ConstructionType : Coated ExternallyAssignedProductIdentifier : 7750162719014 ExternallyAssignedProductIdentifier1 : 662610475816 ExternallyAssignedProductIdentifier2 : 0662610475816 ItemName : Norton Speed-Lok TR Back-Up Pad, 4" Diameter, Grit Medium (Pack of 10) ItemPackageQuantity : 1 ItemTypeKeyword : abrasive-mandrels ItemTypeName : abrasive Manufacturer : St. Gobain Abrasives Material : rubberized MaximumRotationalSpeed : 12000 rpm ModelName : 1082704 ModelNumber : 66261047581 NumberOfItems : 10 PartNumber : 66261047581 ProductDescription : 'Mandrel Assembly, Shank 1/4 Inch, Washer Diameter 5/8 Inch, Length 2 Inches, Fits 2 Inches Deburring Wheels, Specification 5170D-3' ProductSiteLaunchDate : 2004-11-09T05:00:01-00:00 TargetAudienceKeyword : Men UnitCount : 10