Flexovit 7 in. Resin Fbr Dsc Zirc 16GR Each is manufactured with high quality abrasive grain, strong bonds, and heavy-duty fiber backing. This durable construction resists tearing, glazing, and loading, making it i for the toughest finishing applications. The ZA16 Zirconia Alumina grain ensures the longest life when working on high tensile alloys, including metal and stainless steel. Flexovit discs provide fast, cool cutting action and deliver premium performance for all your grinding needs. Model Number: 16GR