... a good grinding performance.• shapeDisc wheel• bindersCeramic wheel2. All the grinding wheels yuanchi diamond tools offer are as following: ... 6A2, 6A9, 12A2,11A2, 11V9, 9A3, 12V2......For hard carbide, optical glass, gem, semi-conductor materials, non-ferrous materials and ... 36PolishingM22/36 and more fineNotice:grit size range for vitrified bonded CBN wheel usually select grit size of 100 / ...