Gem Bids For 6 Cbn Grinding Wheel Rough As Per Drawing No. M- 10728 Resin Bond For Dry Grinding Purpose Cbn Grinding Wheel Finish As Per Drawing No. M-10728 Resin Bond For Dry Grinding Purpose 1a1 Diamond Grinding Wheel With Alluminium Core Material As Per Iso Specn. Os Dia 508 Mm Bore Dia