Specification BulletPoint1 : Fine grain isotropic graphite blank formulated for roughing and detailed EDMing. BulletPoint2 : Provides high metal removal rates with good finish and detail. BulletPoint3 : Recommended for making EDM electrodes. ItemName : Graphite, Rough and Detail EDM Blank, 3.000" H x 4.000" W x 3" L, Each ItemTypeKeyword : graphite-raw-materials Manufacturer : Graphtek PartNumber : EC-12-MW001034 ProductDescription : Multi-purpose fine grain isotropic graphite blank formulated for roughing and detailed EDMing. Provides high metal removal rates with good finish and detail. Tolerance: precision ground finish, +/-.0002