Specification Brand : Gesswein BulletPoint1 : Pure white premium-grade aluminum oxide stones BulletPoint2 : Specially formulated to be load-resistant. BulletPoint3 : Can be used on all steels, from the hard A2, D2 and M2 to the softer P20, 420SS and SAE4130. BulletPoint4 : Retain their shape well, making them a good choice for finishing details. BulletPoint5 : Can be used in a profiler or ultrasonic polisher. BulletPoint6 : Wool Felt Pads: Wool felt polishing pads are made of natural compressed wool and synthetic fiber mixture, polishing performance is good, wear and durable, polishing gloss is good, polishing surface is uniform and smooth Color : Blue CompatibleMaterial : Stone CompatibleMaterial1 : Aluminum CompatibleMaterial2 : Stone CompatibleMaterial3 : Wood IncludedComponents : No ItemName : Gesswein Premium White Finishing Stone Set - 12 Piece ItemPackageDimensions_Height : 0.2 inches ItemPackageDimensions_Length : 8.27 inches ItemPackageDimensions_Width : 4.72 inches ItemShape : Round ItemTypeKeyword : industrial-polishing-stones Manufacturer : Gesswein Material : Aluminum Oxide ModelName : DMP-4IN ModelNumber : 23-77222 NumberOfItems : 1 PartNumber : 4052010 ProductDescription : 12 piece sets of our most popular Premium White stones in sizes 1/4"x1/4", 1/2"x1/8", 1/2"x1/4" and grits 220, 320, 400, 600 ProductSiteLaunchDate : 2016-11-01T21:48:04.968Z Size : #400 Blue SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 27110000