1-1/8 x 21 – 36 R821 Norzon Bluefire
Premium self-sharpening zirconia alumina abrasive. New grain coating Improved Y-wt. polyester backing, upgraded resin bond, resists dulling. Ideal for a wide range of applications and materials .Longer life and faster cut rate. More durable; stands up to demanding applications: high-pressure and hard-to-grind exotic alloys. Improvement in base adhesion, reduced grain shedding, cool cutting. For grinding exotic alloys (titanium, etc.) forged and stainless steel. Minimal loading, excels on soft metals (aluminum, brass, and bronze) and wood, as well as stainless steel and carbon steel.