Description： -Material: Zirconia -Color: Blue -Size: 5" X 7/8" -Grade: 24 Grit -Quantity: Total 25pcs -Arbor Hole Size: 7/8 Inch -Diameter Size: 5 Inch -Bond: Resin Over Resin -Backing Material: Vulcanized Fiber -Advanced Grain Formulas Designed To Maximize Cut Rate On Metals. Superior Design Minimizes Loading, Glazing, And Grain Stripping.vulcanized Fiber Backing Features Good Flexibility, Light Weight, High Hardness, Extra Strength, Abrasion Resisitant, Tear Resistant, Corrosion Resistant, Insulating, Which Helps Achive Operate Comfort, Little Pressure Required During Operations, Longer Lifespan, Security Ensurance. .
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