... used widelysuitable for normal steel grinding, grinding, rough grinding, higher anti-pulls Intensity metal grinding as well, i.e ... cutting, good edges holdout, durableSuitable for form grinding, knives, Measuring instrumentGreen silicon carbideGCgreenOnly no harder ... wheel,type 7 recessed two sides wheeltype 8 taper cup wheel, type 9 dish wheel)Material(A,WA,GC,C,DA,DC,PA,38A) PA Parallel Grinding Wheel ...