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 Ground Plate, 0.188" H x 12" W x 12" L, Each ItemTypeKeyword : graphite-raw-materials Manufacturer : Graphtek PartNumber : EC-12-MW001042 ProductDescription : Multi-purpose fine grain isotropic graphite plate formulated for roughing and detailed EDMing. Provides high metal removal rates with good finish and detail. Tolerance: surface ground, +/-.001