I'm not sure of the actual brand of this stone..But I'm showing as many pictures to show all the sizes of everything.Also the grit, I showed a close up picture so you can see that..There is 2 light groves in the stone..You can just grind away untill they are gone, or dress them out.They are only 0.055" and 0.095" deep right now.,Message me for any info you might need.